PROJECT PROFILE
EXPRESSWAY MONITORING AND ADVISORY SYSTEM
FOR SINGAPORE
CUSTOMER
Land Transport Authority of Singapore
GENERAL
The Expressway Monitoring and Advisory System
(EMAS) is a state of the art electronic traffic
management solution to help in the management
of traffic incidents along the expressways. As a
result, motorists can now look forward to
improvement of road safety, traffic fluidity and
further reduction of traffic accidents.
The EMAS operates based on the principles of
Detection, Verification and Control. The Central
Control System (CCS) of the EMAS is responsible
to link up the Detection, Surveillance, Traffic
Information and Control System, the emergency
telephone
sub-systems
to
perform
the
functionality of:
•
Traffic data acquisition, computation and
displaying real-time traffic trends.
•
Incident detection algorithms using complex
to generate traffic alerts.
•
Perform travel time calculation.
•
Perform traffic data gathering for analysis.
•
Generate response plans for Traffic Police,
Television Corporation of Singapore, Radio
Corporation of Singapore and Glide Control
Centre etc.
•
Monitor operational status of all on-site and
Tunnel Control and management equipment.
•
Hosting of traffic information on the Internet
for the general public.
•
The CCS system operates on a
UNIX operating platform, the
servers are configured for
redundancy to increase the
System
Availability.
The
configuration of redundancy
allow for the fail-over of
processes from the Main CCS
Server to the Backup CCS
Server.
SYSTEM CONFIGURATION
The heart of the Expressway and
Monitoring System is the Central
Computer System located in the
Operation Control Centre in River
Valley. It is configured as a
Client-Server Architecture. The
CCS functions both as a server to
its operator workstations and as a
client to the Front End Logical
Server
of
the
various
sub-Systems.
The Client Server Architecture of
the CCS system also allows
interconnection
of
services
through TCP/IP, all messages
interchange between the various
Front End Logical Servers are
through
these
TCP/IP
connections.
A high speed backbone 100 base
Ethernet network provides the
interconnection infrastructure for
the
CCS
Servers,
CCS
Workstations, Front End Logical
Servers (FELS), Print Servers,
Projection Screen Servers etc.
The various sub-systems are
interfaced to the CCS through its
respective FELS. These are as
follows:
• Detection Sub-System
•
•
Surveillance Sub-System
Traffic Information and Control
System
• Emergency Telephone System
• Tunnel Management System
• Internet Web Interface
Such interfaces allow the realization
of an Advanced Expressway Traffic
Management System using the
parameters of Detection, Verification,
Control and Management.
SCOPE OF WORK
•
•
•
•
•
•
•
Project Management
System Design
Equipment supply and software
development
Installation of equipment
Testing and commissioning
Warranty and maintenance
Operations of the EMAS control
centre
System Architecture for
Expressway Monitoring and
Advisory System
GPS
SLE
AYE
UPS
Video Projection Wall
Web Server
CCS Servers
Main
Terminal
Server
Modem
Tele-Communication
to TV Station, Radio
Station & Traffic
Police
Workstations
Backup
#1
Laser
Printer
#5
Colour
Printer
Clock
TID
ITMS
FELS
Fax
TTD
ETS
FELS
TSD
Video
FELS
PMCS
FELS
Traffic
FELS
TED
VMS
FELS
LUS
ITMS
: Integrated Transport Management System
LUS
: Lane Use Signal
TID
: Travel Information Display
VMS
: Variable Message System
TTD
: Travel Time Display
ETS
: Emergency Telephone System
TSD
: Traffic Signal Display
PMCS
: Plant Management Control System
TED
: Tunnel Equipment Display
FELS
: Front End Logical Server
SINGAPORE TECHNOLOGIES ELECTRONICS LIMITED
24 ANG MO KIO STREET 65 SINGAPORE 569061
TEL: (65) 6481 8888 FAX: (65) 6482 1803
WEBSITE: www.stee.stengg.com
( Regn. No.: 196900084E )