Lancashire County Council Pothole Bid Attachment 10 - in support of answer to Section B – Question B1-F Highway Safety Inspections Code of Practice Issue 3 - July 2007 Issue 3 - July 2007 Highway Safety Inspections. Code of Practice Table of Contents 1 Objectives 1.1 What are Safety Inspections? 4 1.2 The status of this Code of Practice 4 1.3 Modifications to the Code 5 2 Principles to be adopted 2.1 Frequency 6 2.1.1 2.1.2 2.1.3 2.1.4 2.1.5 2.1.6 2.1.7 6 7 8 8 8 9 9 Inspections in urban areas Inspections in rural areas Inspection of cycleways Tolerance of frequencies Inspection Programme Response times Follow up action 3 Inspection Procedures 3.1 3.2 Equipment and general procedures 10 3.1.1 Safety of inspectors 3.1.2 Equipment 3.1.3 Training of inspectors 3.1.3.1 Safe working practices 3.1.3.2 Defects 3.1.3.3 Completing data collection accurately 3.1.3.4 Presentation of evidence 3.1.4 Walked inspections 3.1.5 Cycled inspections 3.1.6 Driven inspections 10 10 10 Carrying out inspections 13 3.2.1 The data capture device 3.2.2 Data to be recorded – compulsory elements 3.2.2.1 Section information 3.2.2.2 Defect Details 3.2.2.3 Inspection file 3.2.3 Sections with no identified defects 3.2.4 Sections with identified defects – the inspectors’ manual 3.2.5 Sections with identified defects – responsibility 3.2.6 Location of defects 3.2.7 Activity Codes and Defect Codes 3.2.7.1 Activity Codes 3.2.7.2 Defect Codes 3.2.8 Marking and Measuring defects 3.2.9 Coding Response times 3.2.10 Material 13 13 Issue 3 - July 2007 11 11 11 15 15 15 15 16 17 18 18 Page 2 Highway Safety Inspections. Code of Practice 3.3 4 3.2.11 Measuring flags, small element paving and blocks 3.2.11.1 Concrete flags 3.2.11.2 Stone flags 3.2.11.3 Small element flags 3.2.11.4 Block paviors 3.2.12 Works instructions 18 19 Organising the day’s work 19 3.3.1 The DCD based inspection system 3.3.2 The Client and Works Contractor’s responsibility 19 19 Defects, action required and response times 4.1 Statutory Undertaker Defects 20 4.2 Footways and cycle tracks (Activity code: FC) 21 4.3 Bituminous carriageways (Activity code: MC) 23 4.4 Non-bituminous carriageways (Activity code: CM) 24 4.5 Covers, grates, frames, boxes (Activity code: CG) 25 4.6 Kerbs, edgings and preformed channels (Activity code: KC) 27 4.7 Road studs (Activity code: RS) 28 4.8 Grassed areas (Activity code: GA) 29 4.9 Hedges and trees (Activity code: HT) 30 4.10 Debris (Activity code: SC) 31 4.11 Road lighting columns (Activity code: LP) 32 4.12 Illuminated traffic signs and bollards (Activity code: SE) 33 4.13 Non-illuminated traffic signs, bollards, marker posts etc (Activity code: SG) 34 Barriers and safety fences (Activity code: BF) 34 4.14 Appendix 1: Treatment Codes 35 Appendix 2: Legal Background 37 Section 41 Highways Act 1980 37 Section 58 Highways Act 1980 38 Appendix 3: Risk Matrix Issue 3 - July 2007 39 Page 3 Highway Safety Inspections. Code of Practice 1 Objectives 1.1 What are safety inspections? The safety inspections, which are in place in Lancashire, consist of a systematic inspection of the majority of the adopted Highway network in order to identify and rectify any defects that represent a danger to the public in terms of either personal injury, or damage to vehicles and/or personal property. The frequency of inspection and response to defects varies with the relative importance of each section of highway and this has been determined with due regard to the guidance provided in the national Code of Practice for Maintenance Management (July 2001) and the Code of Practice for Maintenance Management - ‘Wellmaintained Highways’ (2005) The overall objective of safety inspections is to make the highway safer for users. This will inevitably reduce the number of people injured due to falls etc. It should also reduce the number and overall cost of claims made against the County Council as Highway Authority. These claims may be reduced in three ways: a) The simple reduction in the number of defects is the major contributor. A safer highway network produces fewer injuries and damages and therefore fewer subsequent claims. b) The highway authority, if it carries out inspections on a systematic basis, can defend claims in court on the basis that it has made a reasonable effort to locate and rectify defects. An important part of the defence is to demonstrate that the Highway Authority took all reasonable steps to ensure that the highway was safe (see Appendix 2). A key element of this defence therefore is that records, showing details of inspections and action taken, including the competence of those involved, can be readily produced. c) A proportion of claims are fraudulent. The availability of accurate and well-maintained data should dispose of these relatively easily. 1.2 The status of this Code of Practice This Code of Practice must be used by the organisation responsible for the collection of Safety Inspection data in the administrative County of Lancashire. As with all Codes of Practice, this is not a static document. As experience in collecting Safety Inspection information develops, then it may well be necessary to amend or fine-tune the procedures that are in use. Much of what is in this Code of Practice will also serve as an Inspectors’ guide. Issue 3 - July 2007 Page 4 Highway Safety Inspections. Code of Practice 1.3 Modifications to the Code This edition of the Code of Practice has been modified from the first edition in the light of experience gained in carrying out inspections and working with the code over the previous three years. Intervention levels have been reduced on some defect types to increase the safety of the public. Response times for the repair of defects have also been reduced on some elements of the highway where risks to the public are highest. Resources for the repair of defects are necessarily limited and inspections in some remote parts of the network have had to be suspended where the complaint and incident records are good and the risk of incidents and subsequent claims is low. This will enable resources to be concentrated on those areas of the network where risks are greater with a consequent anticipated improvement in the condition of the busier parts of the network. A decision has also been taken to suspend routine inspections on the majority of backstreets. These streets attract relatively few claims and the limits on staffing and available financial resources means that these areas will only be inspected on a reactive basis. Where backstreets begin to give rise to frequent claims HQ should be notified and these streets will be placed on the inspection regime. This led to the introduction of version 2 of this code in November 2005. Following meetings of the CoP Working Group during 2006, the collection of defects requiring a monthly reaction time has been suspended. The reasoning is that defects requiring a response of up a month do not present an immediate danger to the public and can therefore reasonably be left for repair under planned maintenance work. At the same time various intervention levels for carriageway defects have been changed on the understanding that vehicles are more tolerant of minor defects. Where pedestrians are invited onto the carriageway e.g. at crossing points, the intervention levels remain as for footways. In order to allow safety inspectors to have more flexibility when identifying defects to be repaired, a simple risk matrix has been introduced. This will allow inspectors to make judgements on the response times for individual defects according to their position within the highway and in relation to the prevailing levels of traffic. Risk matrices are recommended in the National CoP ‘Well Maintained Highway’s’ (2005). These changes have been made to bring the CoP more broadly into line with those of other authorities in the area and have necessitated the issue of version 3 of this code. Issue 3 - July 2007 Page 5 Highway Safety Inspections. Code of Practice 2 2.1 Principles to be adopted Frequency 2.1.1 Inspections in Urban areas Urban highways are defined as those within a 40mph or lower speed limit. Urban areas will therefore include some villages and as well as the towns and major “urban” areas of Lancashire. The inspection frequencies set out below will be applied to the urban sections of highway in the County and are governed largely by their footway hierarchy i.e. all highway elements (including carriageways) are inspected at this frequency. Category (COPMM) 1 2 3 4 5 Location (Footway Description) Primary Footway – busy urban shopping and business area footways, major pedestrian routes, some “A” road footways. Secondary Footway – medium usage footways feeding into primary footways, local shopping centres, some “B” and “C” road footways. Link Footway – unclassified road footways linking local access footways through urban areas. Local Access Footway unclassified road footways, low usage, residential estate footways, culs-de-sac etc. Remote Cycleway - routes for cyclists not contiguous with carriageways or footways. Inspection Frequency Monthly 3 monthly 6 monthly 12 monthly 6 monthly COPMM – Code of Practice for Maintenance Management Issue 3 - July 2007 Page 6 Highway Safety Inspections. Code of Practice 2.1.2 Inspections in Rural areas Rural highways are defined as those with a speed limit greater than 40mph. The inspection frequencies set out below will be applied to the rural sections of highway in the County and are governed largely by their carriageway hierarchy i.e. all highway elements (including footways) are inspected at this frequency. Category (COPMM) 1 2 & 3a 3b 4a 4b 5 6 Location (Carriageway Description) Motorway – Principal Motorways M65(P), A601(M) Strategic Route / Main Distributor – mainly principal “A” roads linking urban centres to strategic network. Secondary Distributor – mainly “B” and “C” roads linking larger towns and villages with the strategic network. Link Road – mainly unclassified roads linking main and secondary distributor network, roads linking smaller villages with the distributor network. Local Access Road – unclassified roads serving limited number of properties and small settlements, carrying only access traffic. Remote Cycleway - routes for cyclists not contiguous with carriageways or footways. Remote Footway - routes for pedestrians not contiguous with carriageways. Inspection Frequency Weekly Monthly 3 monthly 6 monthly 12 monthly 6 monthly 12 monthly COPMM – Code of Practice for Maintenance Management Issue 3 - July 2007 Page 7 Highway Safety Inspections. Code of Practice 2.1.3 Inspection of cycleway Where cycleways are integral with the footway or carriageway (ie. cycle lanes) they are to be inspected at the same time, and to the same frequency and standards, consistent with that particular section of highway. This is because, pedestrians are likely to also walk in the cycle lanes and vehicles will frequently drive in the cycle lanes. Where cycleways are separated from footways or carriageways but remain within the highway boundary (ie cycle tracks), then again they are to be inspected at the same time, and to the same frequency and standards, consistent with that particular section of highway. Where cycleways are remote from any contiguous carriageway, then they are to be inspected twice per annum to the urban or rural standards as appropriate. 2.1.4 Tolerance in frequencies Because of the effect of weather, inspector availability etc, it is possible that the specified frequencies cannot be met in some circumstances. For this reason, a tolerance in the frequency of inspections is permitted as follows: Specified frequency 52 times/year 12 times/year 4 times/year Twice/year Once/year 2.1.5 Tolerance 2 working days 6 working days 12 working days 21 working days 30 working days Inspection Programme The inspection programme must be arranged in such a way as to distribute the anticipated defect repair workload evenly among the various county area offices. Concentration of inspections in any single area should be avoided to eliminate large amounts of work falling on single areas with the consequent risk of repair response times being exceeded. It is important that the inspection frequency regime is adhered to, within the tolerances specified above in section 2.1.4. The section 58 defence is highly dependent on regular inspections and every effort must be made to keep to the programme. In the event that inspection tolerances are exceeded, efforts must be made to ensure that the inspection regime of streets in the higher part of the hierarchy are protected as these streets, by definition, present a greater risk to the public and thus expose the Council to a greater risk from claims Issue 3 - July 2007 Page 8 Highway Safety Inspections. Code of Practice 2.1.6 Response times Each defect has a specific response time associated with it, depending on the degree of deficiency and the urban or rural location. These are set out in Section 4 . The response times are as follows: Emergency: Some defects are so serious that they require immediate attention. The inspector will be required to telephone an agreed contact in the office (including the Street Works Inspector) to request immediate action to make safe (Abbreviated as ‘E’). If a defect is deemed so serious as to be classified as an emergency the inspector must remain at the site to guard against accident until relieved by client or contractor’s staff. The inspector should be relieved with an hour and the defect made safe within two hours Day: The defect must be made safe, or repaired within one working day, starting from close of work on the day following its identification. (Abbreviated as ‘D’) The inspector will be required to telephone details of day response defects, upon their discovery, to agreed contacts in area or district offices. 5 day: The defect must be repaired within five working days starting from close of work on the day following its identification. (Abbreviated as ‘5D’) Notify: Some items only require notification to the client rather than be given a fixed response time. Those areas that require a specialist inspection also fall into this category. Some items that fall into this category require notification to the appropriate utility company responsible for defective equipment. (Abbreviated as ‘N’) 2.1.7 Follow-up action Certain defects, as defined in Section 4, will require notification to highways or street lighting personnel who will then decide upon the appropriate course of action. The standard response time is shown as one calendar month although in practice the prioritisation of remedial work will be determined by the individual Highway Superintendent, Street Works Inspector or Street Lighting Engineer as necessary. It is intended that client staff, who are responsible for downloading defects from the Exor system, carry out this notification. Where a defect has been “made safe”, by coning etc, then it is important that the follow-up permanent repair is initiated and included in the recording system. Issue 3 - July 2007 Page 9 Highway Safety Inspections. Code of Practice 3 Inspection procedures 3.1 Equipment and general procedures 3.1.1 Safety of inspectors Inspectors must, at all times, comply fully with the current requirements of the Health and Safety at Work Regulations as they relate to working on the highway. 3.1.2 Equipment Each inspector will carry the following equipment: • • • • • • • • • DCD 5 metre measuring tape Small compass Mobile phone (preloaded with relevant telephone numbers) Can(s) of degradable white spray paint Marking chalk (crayon) Defect measuring equipment Inspector’s Manual (if the information is not held in the DCD) Information cards to give to the Public for enquiries 3.1.3 Training of Inspectors All inspectors must receive comprehensive and thorough training. included include: Matters to be 3.1.3.1 Safe working practices The safety of inspectors is a paramount issue. They must be trained to operate on the highway with due regard for the hostility of the environment whether carrying out walking or driven inspections. 3.1.3.2 Defects Inspectors must become familiar with the defects for which they will be looking, the means of measuring them, and the action to be taken. The information gathered on site will be recorded on Data Capture Devices (DCD’S) and the data produced will interface with and be loaded into the County Council’s current version of the Exor Maintenance Manager system. 3.1.3.3 Completing data collection / loading The importance of properly completed computer entry is a fundamental feature of an inspection regime. The Inspectors must understand its importance, and how it is completed. The definition of sections being inspected, including directional instructions (where appropriate) must be particularly emphasised. The persons responsible for loading the data files into the Exor Maintenance Manager system must receive appropriate training from Exor Corporation Ltd. Issue 3 - July 2007 Page 10 Highway Safety Inspections. Code of Practice 3.1.3.4 Presentation of evidence One of the inspectors’ roles is to present evidence in court. They must understand the basics of this process. A mock trial should be included as part of this training. 3.1.4 Walked inspections In urban areas, all categories of footway and carriageway will be inspected on foot. These may be inspected by a single inspector walking up one footway and returning on the opposite side, or by two inspectors walking in parallel. There are some activities where the inspector will be required to work within the carriageway. This includes, for example, marking and measuring the defects (see para 3.2.8). It is most important that this should only be carried out in conditions where it can be executed safely. On heavily trafficked roads, this could only be achieved by closing lanes with cones and appropriate signing. This would have a major impact on both productivity and costs, and in these circumstances, the inspectors should not attempt to mark and measure the defects. A best estimate of size should be made without venturing into the carriageway if it is considered unsafe to do so. 3.1.5 Cycled Inspections Some parts of the network may lend themselves to cycled inspections. Cycle ways, which are divergent from the carriageway and some lightly trafficked divergent footways, would be typical of such areas. Where cycles are used it is important that the same principles as for walked inspections are followed. The DCD software must record that the relevant sections were cycled and defects must be marked up in the same way. Obviously pedestrians must not be inconvenienced or endangered and inspectors must dismount if instructed to do so by regulatory signage. 3.1.6 Driven inspections In rural areas categories 2&3a, 3b, 4a and 4b may be inspected from a slow moving vehicle. However whenever it is difficult to obtain the necessary level of accuracy from vehicle based inspections, wherever the location, walked inspections must be carried out. Driven inspections must be undertaken by two people, a driver and an inspector, whose roles may be interchangeable. Work should only be carried out when there is good visibility and during periods of low risk. The vehicle provided must be conspicuously coloured and driven on the left-hand side of the road, not the centre. It must have one or more roof mounted beacons operating and display a Keep Right sign to drivers approaching on the same side of the carriageway. Issue 3 - July 2007 Page 11 Highway Safety Inspections. Code of Practice Additional static signs must be used when any of the following conditions apply: • Where the works vehicle can't be seen clearly because of hills, or bends in the road. • Where traffic may build up. • Where there is not enough space for traffic to move past the inspection vehicle. In cases such as these, Road Works Ahead signs with appropriate plates should be used. Road Narrows signs must also be used, with Single File Traffic plates for drivers approaching in each direction. Work should not be carried out further than 1 mile from these signs. See also the caveats, regarding marking defects, in para 3.2.8. The vehicle must be driven on its own side of the road at such a speed that any defects on the carriageway or, where appropriate, on the adjacent footway, can be seen. If the road is too wide to be able to identify defects effectively to the right of the vehicle, then a run in the reverse direction must also be carried out. Where a defect is noted, then the vehicle must be stopped, in a safe position, to allow the inspector to measure and mark the defect, and to note the details. In some cases it will be necessary for some elements of the inspections to be undertaken on foot to record certain types of defects (eg. kerbs, gullies etc). Issue 3 - July 2007 Page 12 Highway Safety Inspections. Code of Practice 3.2 Carrying out inspections 3.2.1 The Data Capture Device Any suitable data capture device may be used for the surveys, but the software must be capable of recording all of the data described in this Code and downloading it to the Exor Maintenance Manager system. In order to ensure that productivity of inspectors is maximised it is considered that a map-based DCD may be preferable, since this would avoid some of the locational problems which occur with text-based DCDs. 3.2.2 Data to be recorded – compulsory elements On starting a new section, the following data must be recorded. Those marked with an asterisk will not often need to be physically entered, as the software or a map-based system will automatically identify them: 3.2.2.1 Section Information • • • • • • • • • • Issue 3 - July 2007 Agent / Link Identifier* – a 10 element alphanumeric character combination of the district agent code, the road number and the link number (eg 4305A674.0). Section Number *- the numeric section number (0-99). Section Description – up to 80 alphanumeric characters. Reverse Direction – is the inspection to be carried out in the reverse direction? (Y/N) Inspector/s – Inspector’s initials, up to 3 alphanumeric characters. If two inspectors are carrying out the inspection, then both of their initials should be entered. Inspection Type* - Type of inspection; safety will automatically be recorded. Initiation – NRW (normal walking), NRD (normal driven) or NRC (normal cycled) Weather – Fine, Rain, Snow or Fog. Road Condition – Dry, Wet, Snow or Ice. Activity List* - SI will be entered automatically. Page 13 Highway Safety Inspections. Code of Practice 3.2.2.2 Defect Details • Activity Code – 2 alphanumeric characters as listed elsewhere in this code, to describe what is being inspected. • Cross Sectional Position – location of the defect across the highway is defined using a single character code as shown below: Key 1 2 3 4 5 6 7 8 9 0 Q W E R T Y U • • • • • • • • • • • • • Issue 3 - July 2007 Cross Sectional Position Left Outside Verge Left Footway Left Verge Lane 1 (hard shoulder on motorway) Lane 2 (left lane on motorway) Lane 3 (middle lane on motorway) Lane 4 (right lane on motorway) Right Verge Right Footway Right Outside Verge Acceleration Splay Lane for left turning traffic Lane for right turning traffic Bus Lane Crawler Lane Other – left Other – right Chainage – chainage measurement from start of section. Location – (Mandatory – a text description of the location of the defect is required up to 40 alphanumeric characters). Identity Code – ID code on lighting columns, signs and bollards etc. Diagram Number – road traffic sign diagram number if required. Inventory Item Code – 2-character inventory item code. Notifiable Code – notifiable code list, including the client’s highway maintenance, street works and street lighting sections. Special Instructions – special instructions free text, up to 255 characters. Defects – 4 alphanumeric character defect code as listed elsewhere in this document. Attribute – the defect attributes to be recorded, if any eg depth/height, length, area or number (0-999). Response – defect priority E, D, 5D, N as listed elsewhere in this document. Action – action recommended or taken by the inspector depending upon the nature of the defect i.e. Immediate, Temporary or Permanent. Treatment Code – to indicate relevant treatments for the repair of defects (‘/’ followed by 3 alphanumeric characters). A list of codes is included as selected examples in Appendix 1. Record Action – a 40-character action text to fully describe the repairs recommended for the defects found. Page 14 Highway Safety Inspections. Code of Practice • • Date and Time* - are automatically recorded from the DCD’s calendar/clock. Comments – 240 characters of free text used for making notebook type entries. Multiple comments can be entered at any stage of the inspection. 3.2.2.3 Inspection File Each inspection file, which may contain data for one or many sections of highway, must record sufficient information to identify the sections inspected, the sections not available for inspection as per the programme, and those sections with no defects found. 3.2.3 Sections with no identified defects It is a vital part of the inspection regime that sections or streets which are not available for inspection or which have been inspected but no defects found, must be recorded as such. The DCD software must allow for this information to be included. Failure to collect and record this information accurately may well result in that section having to be re-inspected. 3.2.4 Sections with identified defects - the inspectors’ manual Each inspector will be provided with a small handbook, which will deal individually with every defect that needs to be processed and will act as a quick reference guide where needed. Alternatively, the DCD may include the same information as a “help” screen. On locating a defect, the simple indexing system will guide the inspector to the page for that particular defect. This will detail each step to be taken in completing the inspection form for that defect, through to options for possible repair codes. The following sections expand on these details in a general way. 3.2.5 Sections with identified defects - responsibility Where a defect is identified the procedures described below must be followed. It is first necessary, however, to identify the responsibility for the defect. The DCD software will allow the inspector to assign responsibility to the Client’s highway maintenance, street works and street lighting sections. 3.2.6 Location of defects When a defect is identified, its location must be described as accurately as possible, not only to allow the contractor to find and deal with it, but to avoid any confusion in a subsequent enquiry. This is required even if a map-based data collection system is in use. It is extremely important that the highway element on which the defect has been found is identified. In particular, the DCD software must identify the correct footway irrespective of the direction in which the inspector is walking. This information could be required to rebut any subsequent claims. Issue 3 - July 2007 Page 15 Highway Safety Inspections. Code of Practice Defects will be located by chainage and cross sectional position and a text description of local features will also be required. In an urban street, it is relatively easy to record a defect as ‘Outside No 24 (or opposite No 24, meaning across the street)’ and for recording purposes, this could appear as ‘OS24’ (or ‘OP24’). Where houses are numbered, this method should always be used. Where there are no properties or they are not numbered, and a defect occurs within 2-3 metres of an easily identifiable object such as a post-box, or a numbered lamp column or sign, it can be described as ‘Close to..’. Thus ‘Close to LP7’ would mean that the defect is within 2-3 metres of lamp column No 7. Where the properties are not numbered, but street lighting is present, the defect can be located as a specific distance and direction from a numbered column. Compass references (north etc) can be used, making use of the inspector’s compass if necessary. An example may be “20m N of LP6”. Where there is no alternative method available, a distance measurement must be used. It is expected that the vehicle will be equipped with a high accuracy distance-measuring device, and this should always be reset at the start of a new section. Defects can be located as ‘20m north east from junction with …’. On walked inspections, the distance may need to be measured with a measuring wheel or paced out (1 metre per pace) from an identifiable point, such as a road junction. If suitable Geographical Positioning System (GPS) equipment becomes available, this may ultimately be utilised. Where map based systems are used defects must be plotted with as much accuracy as possible and certainly within a metre of the true position of the defect. This will enable the defects to be plotted on plan and will assist the legal team in dealing with liability issues with respect to highway third party claims. 3.2.7 Activity Codes and Defect Codes The primary defects to be identified are surface defects of such size as to be considered dangerous (i.e. 20mm or greater in the urban situation and 25mm or greater in the rural situation). This will include raised and lowered flags, potholes, raised blacktop surfaces, raised or sunken service box covers, raised or sunken kerbs, defective verges etc. 3.2.7.1 Activity Codes The two-letter codes used in this inspection regime describe the element of the highway on which the defect is located, and are as follows: FC MC CM CG KC RS GA HT SC LP Issue 3 - July 2007 - Footways and cycleways Blacktop carriageways Concrete carriageways Covers, grates, frames, boxes Kerbs, edging, preformed channels Road studs Grassed areas Hedges and trees Debris Road lighting columns Page 16 Highway Safety Inspections. Code of Practice SE - Illuminated Traffic signs and bollards SG - Non-illuminated traffic signs, bollards, marker posts etc BF - Barriers and safety fencing 3.2.7.2 Defect Codes The four-letter code used in this inspection regime describes details of the defect itself, and these are listed in Section 4. If the defect is not covered by a four-letter code, then the code ‘OTHR’ should be used, and described in the ‘comments’ area. Defect attributes are almost always required, generally about the size of the defect – its depth and dimensions. Full details are shown in Section 4. It will sometimes be useful, or indeed essential, to append comments to specific defects. As mentioned, these will be particularly important where the defect is described as OTHR (i.e. it is not included in the list of standard defects). It will also be important to make comments where the action to be taken for a particular defect is not clear to the inspector and the advice of a Highways Superintendent (or equivalent) is required. A proportion of defects will not be the highway authority’s responsibility. These will primarily be defects that result from the work of the Statutory Undertakers. The inspector will not be expected to make any recommendations as to the work required to rectify these defects. They must be recorded, the defect will then be pursued by the authority’s Street Works Inspector (see Section 4) On occasion, the defects, particularly overhanging tree branches, will be the responsibility of a private individual. Again the defect should only be noted and action will be taken by the authority’s Highway Superintendent. 3.2.8 Marking and Measuring Defects All defects should, where possible, be marked in white spray paint or crayon if surfaces are wet (but see para 3.1.4). Where the defect is relatively small, then a rectangle should be painted round it. Where the defect is larger and particularly an area of defective surface, then the corners of the area should be marked. Where the defect involves flags (paving units), all of the flags to be re-laid should be marked with a “dot”, whilst those which need to be replaced should be marked with a cross. See section 3.2.11 for more details. Whilst the depth of the defect is important in determining the response time to be assumed, the inspector quickly develops adequate experience in estimating depths. This would generally prove adequate. Greater accuracy is only important if the defect depth is very close to the point at which it changes from one response time to another, but If there is any doubt, then the higher value should be assumed. Where it is necessary to measure the area of a defect, then the measuring wheel or the 5-metre tape should be used. Whilst the size of the defect should be as precise as reasonably possible, time should not be spent seeking an exact measurement. Issue 3 - July 2007 Page 17 Highway Safety Inspections. Code of Practice 3.2.9 Coding Response times The response time necessary for defects to be rectified depends on the urban or rural location of the section and the degree of deficiency of the defect. These are described, together with the appropriate codes, in Section 0 and Section 4. They will be recorded as ‘E’, ‘D’, ‘5D’ and ‘N’. Note that a 1-day response could also, where necessary or appropriate, include “make safe” by coning or fencing off the defect. It is normally expected that repair work will be completed on the defect within 1 week. 3.2.10 Material The inspector must make a best effort at describing the material in which the defect occurs. If it is a blacktop material, and the inspector does not know exactly what it is, the abbreviation “BT” should be used. 3.2.11 Measuring flags, small element paving and blocks Measuring areas of damaged or uneven flags is fairly complex, particularly in relation to the works instruction. This varies between the different types of flags and small element paving. 3.2.11.1 Concrete flags (slabs) Concrete flags are generally 63mm thick and fall in three sizes, which can be identified as follows: A B C = 600mm(2 feet) x 600mm = 900mm(3 feet) x 600mm = 750mm(2½ feet) x 600mm Sometimes, of course, they are cut to shape around bends, obstacles etc. Areas of flagged footway may well have both broken flags and those that are simply displaced but unbroken. It is important to clarify that cracked or broken flags do not, on their own, constitute a hazard within the definition of this Code. There must also be trips greater than the minimum specified in the relevant defects in para 4.2. (SLPF or SROK) for these areas to be treated as defective. The area of new flags required must be specified and this information may be included as a defect attribute or included in the action text. 3.2.11.2 Stone flags Stone flags are very rarely of a consistent size. Even when they are badly broken, they can often be re-laid safely, but if they need replacing, it is unlikely that flags of exactly the right dimensions can be found and they might be replaced by more, or fewer flags. For this reason, only the affected area needs to be measured and described, and the Highway Superintendent will make the necessary decisions. Issue 3 - July 2007 Page 18 Highway Safety Inspections. Code of Practice 3.2.11.3 Small element flags There is an increasingly diverse range of small element flags being used on the highway and they may be difficult to describe. A sample flag should be measured and included in the action text. If there is any doubt about the thickness, then assume that they are 50mm thick. If they have a special colour or surface texture (eg the “dimpled” finish found on the approach to crossing points), then this should be mentioned. Other than the wider range, and the fact that damage is less likely than with normal concrete flags, the principles described in section 3.2.11.1 above should be used. 3.2.11.4 Block paviors Block paviors used in highways are usually of a reasonably consistent size. The colours and thickness, however, vary considerably and this should be noted. Otherwise, the principles described in section 3.2.11.1 above should be used. 3.2.12 Works instructions The work to be carried out is specified by the inspector using “treatment codes” beginning with “/” and these are set out in Appendix 2. A comprehensive list will be included in the DCD software. The Exor Maintenance Manager system will convert these treatment Codes into detailed works instructions. These codes should be used in combination with the Record Action text field to fully describe the repairs necessary for the defect found, and must be adequate to initiate the repairs. 3.3 Organising the day’s work The routes to be followed during each day will be determined by the Consultant taking into account the prescribed frequencies and tolerances described in section 2.1. 3.3.1 The DCD based inspection system On returning to the office the data file will be downloaded from the DCD into a terminal connected to the Exor Maintenance Manager system. The treatment codes and action text will be converted into works instructions. 3.3.2 The Client and Works Contractor’s responsibility The Exor Maintenance Manager system will store the date and time when the Client’s instructions were given to the contractor. The Contractor must arrange to undertake the work as instructed by the Client within the response times required by the defect’s priority as set out in section 4. The Client will access the system when the defect notification is received, and issue an appropriate works instruction. Upon completion of the work, the Contractor will report to the Client when the repair was completed and this information will then entered onto the system by the Client. Where the repair is only a “make safe” action, the Client must instruct a follow-up permanent repair as necessary. Issue 3 - July 2007 Page 19 Highway Safety Inspections. Code of Practice 4 4.1 Defects, action required and response times Statutory Undertaker defects Many defects found on the highway are the consequence of Statutory Undertaker works. These may take the form of defects in a trench or patch reinstatement in either a footway or a carriageway, or disturbed paving with trips on a flagged or block paved footway. These must be notified to the Authority’s Street Works Inspector for action. If the inspector identifies a defect that is clearly the responsibility of a Statutory Undertaker, the course of action is to notify the Street Works Inspector who will notify the relevant company. The client staff will need to monitor the action on the defect and if there is no response then corrective action should be taken to make the defect safe. The cost of this work can then be charged to the relevant company. If it is not clear whether the defect is due to Statutory Undertaker works, or it is definitely not, then it should be processed in the usual manner. 4.2 Risk Matrix and Response Times The response times in the following tables are to be used as a guide and are applicable under ‘normal’ conditions. The risk matrix at Appendix 3 is to be used by safety inspectors to assess all defects with particular attention paid to those that may not present such a significant threat to the public and the response time is to be adjusted accordingly. Typical reasons for reducing the response times are: Where defects are not on pedestrian ‘desire lines’ or are very close to buildings or street furniture where it would very difficult for pedestrians to trip; Where defects in carriageways are away from the normal wheel tracks of vehicles, such as in channels where vehicle speeds would be low and the chances of vehicle/tyre damage would be correspondingly low; Where pedestrian or vehicular traffic is particularly light or vehicles are slow moving. The defect matrix ‘score’ is to be recorded by inspectors for all defects collected and recorded. Where defect response times are reduced to ‘Await Planned Maintenance’ using the matrix, such defects are deemed to be not actionable and are not to be recorded. Issue 3 July 2007 Page 21 Highway Safety Inspections. Code of Practice 4.2 4.2.1 Footways and cycle tracks (Activity code: FC) General notes: Paving units: These may be traditional “flags” or a smaller unit, including block paving. Where appropriate, make a note of the size(s) and material (and colour if appropriate). Code Description Intervention Details (mm) Urban Category 1 Other BKPF Block profile – uneven/trip/cracked >20 >40 20-40 BTPF Small depression or hump causing trip hazard >20 >40 20-40 Missing paving slabs or blocks OVGV Overgrown vegetation causing trip hazard PDLV Failed patch causing trip hazard Response Time Comments >100 40-100 D 5D >100 40-100 D 5D Notify Street Works Inspector if SU works Notify Street Works Inspector if SU works Rural Category 2&3a >25 >25 Other MISP >50 D 5D 5D >50 >20 >40 20-40 >25 >100 40-100 D 5D PGAP Paving unit joint gap -slab or block >25 >30 >30 >40 5D SLPF Slab profile -uneven/trip/cracked >20 >40 20-40 >25 >100 40-100 D 5D Issue 3 July 2007 Note defect details. Notify Street Works Inspector if SU works Notify Street Works Inspector if SU works Notify Street Works Inspector if SU works Page 22 Highway Safety Inspections. Code of Practice SROK Slab rocking >20 >20 POTH Blacktop pothole >20 >40 20-40 >25 >100 40-100 D 5D TDLV >20 >40 20-40 >25 >100 40-100 D 5D Trench reinstatement causing trip hazard OTHR Other defect Issue 3 July 2007 5D E, D, 5D Notify Street Works Inspector if SU works Notify Street Works Inspector if SU works Note defect details. Response as appropriate. Page 23 Highway Safety Inspections. Code of Practice 4.3 Bituminous Carriageways (Activity code MC) 4.3.1 General notes: Localised edge deterioration (LODT defects): In all cases only record where defect encroachment into the carriageway is >150mm. # Designated crossing points are: Zebra crossings, pelican crossings etc and any locations where dropped kerbs are installed to cater for people with mobility problems. Code Description Intervention Details (mm) Urban Category 1 Rural Comments Length < 3 metres. See general notes above In urban ‘other’ and rural ‘cat 2&3a’ IL to be 20mm at designated crossing points# In urban ‘other’ and rural ‘cat 2&3a’ IL to be 20mm at designated crossing points# In urban ‘other’ and rural ‘cat 2&3a’ IL to be 20mm at designated crossing points# Note defect details Response as appropriate >100 40-100 >100 40-100 Category 1,2&3a >100 40-100 *Failed patch causing trip hazard >40 >75 40-75 >75 40-75 >100 40-100 D 5D POTH Pothole >40 >75 40-75 >75 40-75 >100 40-100 D 5D TDLV *Trench reinstatement causing trip hazard >40 >75 40-75 >75 40-75 >100 40-100 D 5D LODT Localised edge deterioration PDLV OTHER Other Response Time Other >100 40-100 D 5D E, D or 5D *In all cases involving SU works notify Street Works Inspector Issue 3 July 2007 Page 24 Highway Safety Inspections. Code of Practice 4.4 4.4.1 Non-Bituminous Carriageways (Activity Code: CM) General notes: Non-bituminous carriageways include areas of setts, cobbles, block paving carriageways etc Code Description Intervention Details (mm) Urban Category 1 Rural Comments In all urban and rural ‘cat 2&3a’ IL to be 20mm at designated crossing points# In all urban and rural ‘cat 2&3a’ IL to be 20mm at designated crossing points# >40 >75 40-75 Category 1,2&3a >75 40-75 POTH Pothole >40 >75 40-75 >75 40-75 >100 40-100 D 5D STEP Stepping at joint/crack >40 TDLV *Trench reinstatement causing trip hazard Block profile -uneven/trip/cracked >40 >75 40-75 >75 40-75 >75 40-75 >75 40-75 >75 40-75 >75 40-75 >100 40-100 >100 40-100 >100 40-100 D 5D D 5D D 5D PDLV BKPF *Failed patch causing trip hazard MISS Missing highway element Eg. sett, block etc OTHR Other defect Issue 3 July 2007 >40 Other Response Time Other >100 40-100 D 5D In all urban and rural ‘cat 2&3a’ IL to be 20 mm. at designated crossing points# D 5D E,D or 5D Note defect details. Response as appropriate *In all cases involving SU works notify Street Works Inspector Page 25 Highway Safety Inspections. Code of Practice 4.5 4.5.1 Covers, grates, frames, boxes (Activity code: CG) General Notes This category covers a wide range of “ironwork”. Apart from gullies, and a few manholes, the majority of ironwork is the responsibility of the Statutory Undertaker concerned. The major items that will be encountered are United Utilities’ stop taps and BT manhole covers. . Code Description Intervention Details (mm) Urban Category 1 BLOK Blockage (gully) ICLV *Difference in component levels causing trip hazard (footway) *Difference in component levels causing hazard (carriageway) Difference in level with gully causing trip hazard (carriageway) *Difference in level with adjacent surface causing trip hazard (C’way but excl. carriageway gully) * Difference in level with adjacent surface causing trip hazard (footway) *Missing Cover ICLC IDLG IDLV IDLF MISS Issue 3 July 2007 Rural Other Category 1,2&3a Response Time Comments N Water ponding at valley points after rain – Notify Highways Superintendent Other >20 >40 20-40 >25 >100 40-100 D 5D >40 >75 40-75 >75 40-75 >100 40-100 D 5D >40 >75 40-75 >75 40-75 >100 40-100 D 5D >40 >75 40-75 >75 40-75 >100 40-100 D 5D >20 >40 20-40 >25 >100 40-100 Notify Highway Superintendent D Page 26 Highway Safety Inspections. Code of Practice 5D Issue 3 July 2007 Page 27 Highway Safety Inspections. Code of Practice PARL Gully grating bars parallel to kerb excluding gratings with cross bar/s SMTH *Smooth surface of cover OTHR Other Issue 3 July 2007 N Notify Highways Superintendent N Note Utility if poss. Identify only at stress points i.e. bends braking areas etc. Notify Streetworks Inspector E,D or 5D Note defect details Response as appropriate * In all cases involving SU equipment notify Street Works Inspector Page 28 Highway Safety Inspections. Code of Practice 4.6 4.6.1 Kerbs edgings, preformed channels (Activity Code: KC) General notes: All the defects described in this category are classed as reportable safety defects ONLY when adjacent to paved footways, cycleways, pedestrian/vehicle crossing points and other hardstandings such as paved bus stops etc. Any kerbs/edgings adjacent to grass verges or hard landscaped areas or on the “wrong” side of pedestrian guard rails will therefore be EXCLUDED Code Description Intervention Details (mm) Urban Category 1 Response Time Rural Other Category 1,2&3a Other DAMG Damaged >50 5D EGAP Joint gap >25 5D EVPJ Vertical projection >20 MISS Missing OTHR Other related defect Issue 3 July 2007 >50 >50 Comments >100 5D 5D E, D or 5D Note defect details. Response as appropriate. Page 29 Highway Safety Inspections. Code of Practice 4.7 4.7.1 Road Studs (Activity code: RS) General Notes Code Description Intervention Details (mm) Urban Category 1 Response Time Rural Other Category 1,2&3a Other LCAS Loose cats-eye casing 5D LSTD Loose studs 5D MISC Missing cats-eye casing leaving pothole OTHR Other related defect Issue 3 July 2007 >40 >75 40-75 >75 40-75 Comments >100 40-100 D 5D E, D or 5D Note defect details Response as appropriate Page 30 Highway Safety Inspections. Code of Practice 4.8 4.8.1 Grassed areas (Activity code: GA) General notes: In the context of safety inspections, only verges that constitute part of the footway are considered as “Grassed areas”. It will be necessary to make a judgement as to whether there are significant pedestrian movements across the verge when assessing response times. However claims for trips etc. on verges/grassed areas are not unusual and significant defects should be treated seriously and be reported. Code Description Intervention Details Urban Category 1 OTHR Related verge defect Issue 3 July 2007 Rural Other Category 2&3a Response Time Comments E, D or 5D, Note defect details Response as appropriate Other Page 31 Highway Safety Inspections. Code of Practice 4.9 4.9.1 Hedges and trees (Activity code: HT) General notes Most overhanging trees are the responsibility of private owners. If they are highway trees, then the highway authority must act to bring the clearance up to an acceptable standard. In either case, the Highway Superintendent will take the necessary action. Code Description Intervention Details Urban Category 1 Rural Other Category 1,2&3a Response Time Comments E Note defect details Notify Highway Superintendent Notify Highway Superintendent. Notify Highway Superintendent Other DANG Dangerous condition UNST Unstable 5D OVER Trunk overhanging c’way creating hazard for high vehicles. N Issue 3 July 2007 Page 32 Highway Safety Inspections. Code of Practice 4.10 Debris (Activity code: SC) 4.10.1 General notes Although cleansing is primarily a District Council function, debris in a traffic lane, particularly on a high-speed road, can be extremely dangerous, and has been held as being the responsibility of the Highway Authority. Code Description Intervention Details Urban Category 1 DBTL Debris in traffic lane or cycle track MUCK Excessive muck in carriageway or footway OTHR Other related defect. Issue 3 July 2007 Rural Other Category 1,2&3a Response Time Comments E Remove if possible, otherwise notify Highway Superintendent. Notify Highway Superintendent. Note defect details and notify Highway Superintendent Response as appropriate. Other D E, D or 5D Page 33 Highway Safety Inspections. Code of Practice 4.11 Road Lighting (Activity code: LP) 4.11.1 General notes Although street lighting is separately inspected, the following defects represent either potentially dangerous defects, or additional information to assist in the maintenance of the street lighting stock. Code Description Intervention Details Response Time Comments DAMG Column/other equipment damaged EXPW Exposed wiring E MISD Missing door E OTHR Other related defect E Notify Street Lighting Section Notify Street Lighting Section Notify Street Lighting Section Notify Street Lighting Section Urban Category 1 Issue 3 July 2007 Rural Other Category 1,2&3a Other E Page 34 Highway Safety Inspections. Code of Practice 4.12 Illuminated Traffic Signs and Bollards (Activity Code: SE) 4.12.1 General notes: Although lit signs and bollards are separately inspected, some of the following defects represent either potentially dangerous defects, due to the presence of electrical connections, or additional information to assist in the maintenance of the lit sign stock. Code Description Intervention Details Response Time Comments DAMG Bollard, sign post damaged E EXPW Exposed wiring E MISD Missing door E MISS Bollard, illuminated sign missing at busy locations Other related defect eg sign board slipped below 2m Notify Street Lighting Section Notify Street Lighting Section Notify Street Lighting Section Notify Street Lighting Section Notify Street Lighting Section Urban Category 1 OTHR Issue 3 July 2007 Rural Other Category 1,2&3a Other 5D E,D or5D Page 35 Highway Safety Inspections. Code of Practice 4.13 Non-illuminated traffic signs, bollards, marker posts etc (Activity code: SG) 4.13.1 General notes: The following defects apply to unlit signs and bollards Code Description Intervention Details Urban Category 1 OTHR 4.14 Rural Other Category 1,2&3a Response Time Comments E,D or 5D, Notify Highway Superintendent Response as appropriate Response Time Comments 5D Make safe within 1day, repair within 5 days Notify Highway Superintendent Other Miscellaneous defect related to signs and bollards Barriers and safety fences (Activity code: BF) 4.14.1 General notes The following notes apply to all barriers and safety fences Code Description Intervention Details Urban Category 1 MISS Section of barrier or guardrail missing OTHR Related defect eg damaged and unsafe fencing or barrier elements Issue 3 July 2007 Rural Other Category 1,2&3a Other E, D or 5D Page 36 Highway Safety Inspections. Code of Practice Appendix 1: Treatment Codes /AGY /AMH /AVH /CBK /CDB /CHT /CSG /CVG /ERA /ERB /ERC /FJT /FKC /FLE /FLP /IHT /NHA /PBA /PBB /PBC /PBD /PBL /PCH /PDR /PEC /PET /PGR /PGY /PKA /PKB /PKC /PKD /PKE /PKF /PKG /PKH /PKJ /PKK /PKL /PKM /PKN /PKP /PMH /PMP /PRA /PRS Adjust level of gully grating and frame Adjust level of manhole cover and frame Adjust level of valve or hydrant Clear blocked gully Clear debris from lane Cut back hedge or tree Clear sign Cut back vegetation Excavate and reinstate – asphalt Excavate and reinstate – bitmac Excavate, reinstate: bit base/asphalt wearing course Fill joint In situ concrete, infill to joint Fill edge deterioration with bitmac Fill pothole/depression with bitmac Specialist inspection required Notify highway authority or agent Provide 65mm concrete block paving Provide 80mm concrete block paving Provide 65mm clay block paving Provide 80mm concrete block paving Provide new bollard Provide new channel Make safe and provide new door Provide 150mm x 50mm concrete edging Provide 100mm x 37mm timber edging Provide pedestrian guard rail Provide gully grating and frame Provide 255 x 125mm, 12.5 deg splay straight. kerb Provide 150 x 125mm bullnose straight. kerb Provide 255 x 125mm, 45 deg splay straight. kerb Provide stone straight. kerb Provide 255 to 150mm x 125mm, 12.5deg LH straight. drop kb Provide 255 to 150mm x 125mm, 12.5deg RH straight. drop kb Provide 255 to 150mm x 125mm, 45deg LH straight. drop kb Provide 255 to 150mm x 125mm, 45deg RH straight. drop kb Provide 255 to 150mm x 125mm, 12.5deg LH drop radius kb Provide 255 to 150mm x 125mm, 12.5deg RH drop radius kb Provide 255mm x 125mm, 12.5 deg splay radius kerb Provide 150mm x 125mm bullnose radius kerb Provide 255mm x 125mm, 45deg splay radius kerb Provide stone radius kerb Provide manhole cover and frame Provide new marker post Provide alloy roadstud Provide catseye roadstud Issue 3 - July 2007 Page 37 Highway Safety Inspections. Code of Practice /PSB /PSF /PSG /PSL /PSM /PSN /PSS /PST /RBL /REW /RGR /RLC /RLE /RLK /RLP /RPC /RPE /RPK /RPU /RRA /RRS /RSF /RSG /RVG Provide safety fence Provide new sign face Provide new sign complete Provide concrete slabs, 600mm x 900mm x 63mm Provide concrete slabs, 600mm x 600mm x 63mm Provide natural stone slabs Provide concrete slabs, 450mm.x 450mm x 70mm Provide tactile slabs, 400mm x 400mm x 63mm Repair bollard Make safe and repair Repair pedestrian guardrail Relay existing channel Relay existing edging Relay existing kerb Repair lighting column/other equipment In situ concrete repair to channel In situ concrete repair to edging In situ concrete repair to kerb Relay paving unit Relay alloy roadstud Relay catseye roadstud Repair safety fence Repair sign Repair verge Issue 3 - July 2007 Page 38 Highway Safety Inspections. Code of Practice Appendix 2: Legal Background The two relevant sections of the Highways Act, as referred to in this Code of Practice are as follows: Section 41 Highways Act 1980: “41 Duty to maintain highways maintainable at public expense (1) The authority who are for the time being the highway authority for a highway maintainable at the public expense are under a duty, subject to subsections (2) and (4) below, to maintain the highway. (2) An order made by the Minister under section 10 above directing that a highway proposed to be constructed by him shall become a trunk road may, as regards (a) a highway to which this subsection applies which becomes a trunk road by virtue of the order, or (b) a part of a highway to which this subsection applies, being a part which crosses the route of the highway to be so constructed, contain such a direction as is specified in subsection (4) below. (3) Subsection (2) above applies to (a) any highway maintainable at the public expense by a local highway authority, and (b) any highway other than a highway falling within paragraph (a) above or a highway maintainable under a special enactment or by reason of tenure, enclosure or prescription. (4) The direction referred to in subsection (2) above is (a) in a case where the highway or part of a highway falls within subsection (3)(a) above, a direction that, notwithstanding subsection (1) above, it shall be maintained by the highway authority for that highway until such date, not being later than the date on which the new route is opened for the purposes of through traffic. as may be specified in a notice given by the Minister to that authority; and (b) in a case where the highway or part of a highway falls within subsection (3)(b) above, a direction that, notwithstanding subsection (1) above, the Minister is to be under no duty to maintain it until such date as aforesaid. (5) Where an order under section 10 above contains a direction made in pursuance of subsections (2) to (4) above, then until the date specified in the notice given by the Minister pursuant to the direction, in accordance with subsection (4) above, the powers of a highway authority under sections 97, 98, 270 and 301 below as respects the highway to which the direction relates are exercisable by the highway authority to whom the notice is required to be given, as well as by the Minister.” Issue 3 - July 2007 Page 39 Highway Safety Inspections. Code of Practice Section 58 Highways Act 1980 “58 Special defence in action against a highway authority for damages for nonrepair of highway (1) In an action against a highway authority in respect of damage resulting from their failure to maintain a highway maintainable at the public expense it is a defence (without prejudice to any other defence or the application of the law relating to contributory negligence) to prove that the authority had taken such care as in all the circumstances was reasonably required to secure that the part of the highway to which the action relates was not dangerous for traffic. (2) For the purposes of a defence under subsection (1) above, the court shall in particular have regard to the following matters : (a) the character of the highway, and the traffic which was reasonably to be expected to use it; (b) the standard of maintenance appropriate for a highway of that character and used by such traffic; (c) the state of repair in which a reasonable person would have expected to find the highway; (d) whether the highway authority knew, or could reasonably have been expected to know, that the condition of the part of the highway to which the action relates was likely to cause danger to users of the highway; (e) where the highway authority could not reasonably have been expected to repair that part of the highway before the cause of action arose, what warning notices of its condition had been displayed. But for the purposes of such a defence it is not relevant to prove that the highway authority had arranged for a competent person to carry out or supervise the maintenance of the part of the highway to which the action relates unless it is also proved that the authority had given him proper instructions with regard to the maintenance of the highway and that he had carried out the instructions. (3) This section binds the Crown." Issue 3 - July 2007 Page 40 Highway Safety Inspections. Code of Practice Appendix 3 Risk Matrix Risk Matrix for Safety Defect Responses other than Emergencies Probability of Incident occurring Low (1) Medium (2) High (3) Low (1) 1 2 3 Medium (2) 2 4 6 High (3) 3 6 9 Speed and/or level of traffic Response Times Await Planned Maintenance (PM) 5 Day Day Notes. i) The horizontal axis is a measure of the probability of an incident occurring due to the position of the defect on the highway. ii) The vertical axis is a measure of the level and speed of vehicular traffic or the level of pedestrian traffic as appropriate. An indication of the traffic levels is inferred by the frequency of inspections of streets. iii) To establish the defect response time, multiply the horizontal axis score by the vertical axis score and refer to the shaded ‘Response Times’ table The above matrix should be used as a further guide to inspectors when setting response times for defect repair. For example: defects that are located away from pedestrian desire lines, such as close to buildings or street furniture will attract a lower probability score and response times will be reduced. Similarly, on carriageways where defects are not in vehicle wheel tracks, such as in the channel or on the centreline, probability scores will be lower and response times will be reduced. Also, defects in very lightly trafficked areas or where vehicle speeds are low defect scores will be lower and response times will be reduced. The matrix is to be applied to all defects located by the safety inspectors. Where response times are thus reduced to (PM) such defects are deemed to be not actionable and are not to be recorded. If conditions worsen, they will be recorded during subsequent inspections. Issue 3 - July 2007 Page 41
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