Sheet 1 of 4
TL-4 systems
4 cables
August 3, 2016
A - Alternate to
50”/1270mm
other side of
post (cables are
interwoven)
46”/1168mm
42”/1067mm
40”/1016mm
39”
991mm
30”/762mm
30”
762mm
41.7”
1059mm
40.6”/1030mm
38.1”
968mm
29.5”
749mm
25”
635mm
20”/508mm
42”/1067mm
36.6”
930mm
A
30.7”
780mm
Traffic Side
40.2”/1020mm
35”
890mm
30.7”/780mm
35”
890mm
31”
790mm
28.2”
720mm
24.8”
630mm
A
25.2”
640mm
25”
640mm
32” (811mm) Post Height
for 31” (787mm) W-Beam
Top Rail Height
(MASH 2009)
28.75” (730mm) Post
Height 27.75” (705mm)
W-Beam Top Rail Height
(NCHRP 350)
- Alternate to
other side of
cables
Applies to
median and
roadside
installations
Tolerances:
Gibraltar: +/- 1” (25.4mm)
Trinity: +/- 1” (25.4mm)
Brifen: +/- 1.2” (30mm)
Safence: +/- 0.8” (20mm)
Nucor: +/- 1” (25.4mm)
25”
640mm
22”
560mm
20”
508mm
17.4”
442mm
A
18.9”
480mm
18.9”
480mm
15”
380mm
15”
380mm
10”/254mm
Note:
If a system does not have ‘(4:1)’ specified, it is to be
used for 6:1 or flatter applications. The slope refers
to the slope the vehicle is travelling on in advance of
impact. The slope behind the barrier is not stipulated.
0”/0mm
Manufacturer
FHWA Acceptance Letter #
AT Product List Status
Gibraltar
B-137A1
Proven
Trinity CASS S3
B-157
Proven
Brifen WRSF
B-82B
Potential
Gregory Safence
B-88E
Potential
Nucor Nu-Cable
(20’ post spacing)
B-184A
Not currently on AT
Product List
Nucor Nu-Cable
B-167
Not currently on AT
Product List
For barriers that are designed for impact on the front
only, the steepness of the slope behind the barrier is
not relevant when determining the suitability of a
HTCB for the installation.
Sheet 2 of 4
TL-4 systems
3 cables
August 3, 2016
A - Alternate to
50”/1270mm
other side of
post (cables are
interwoven)
42”/1067mm
41”/1041mm
Traffic Side
40”/1016mm
39”
991mm
30”/762mm
30”
762mm
32” (811mm) Post Height
for 31” (787mm) W-Beam
Top Rail Height
(MASH 2009)
28.75” (730mm) Post
Height 27.75” (705mm)
W-Beam Top Rail Height
(NCHRP 350)
- Alternate to
other side of
cables
Applies to
median and
roadside
installations
38.1”
968mm
30.7”/780mm
29.5”
749mm
28.2”
720mm
Tolerances:
Gibraltar: +/- 1” (25.4mm)
Trinity: +/- 1” (25.4mm)
Brifen: +/- 1.2” (30mm)
Safence: +/- 0.8” (20mm)
Nucor: +/- 1” (25.4mm)
25.2”
640mm
20”/508mm
20”
508mm
21”
533mm
18.9”
480mm
10”/254mm
Note:
If a system does not have ‘(4:1)’ specified, it is to be
used for 6:1 or flatter applications. The slope refers
to the slope the vehicle is travelling on in advance of
impact. The slope behind the barrier is not stipulated.
0”/0mm
Manufacturer
FHWA Acceptance Letter #
AT Product List Status
Gibraltar
B-137A
Proven
Trinity CASS
B-141
Proven
Gregory Safence
B-88D
Potential
For barriers that are designed for impact on the front
only, the steepness of the slope behind the barrier is
not relevant when determining the suitability of a
HTCB for the installation.
Sheet 3 of 4
TL-3 systems
4 cables
August 3, 2016
50”/1270mm
48.5”/1232mm
46”/1168mm
40”/1016mm
41.7”
1059mm
39”/991mm
38.1”
968mm
36.6”
930mm
36”
914mm
30.7”
780mm
30.1”
765mm
A
24.2”
615mm
32”/813mm
A
30”/762mm
29.5”
749mm
28.4”
720mm
A
A
38.4”
975mm
37.5”
953mm
Traffic Side
32” (811mm) Post Height
for 31” (787mm) W-Beam
Top Rail Height
(MASH 2009)
28.75” (730mm) Post
Height 27.75” (705mm)
W-Beam Top Rail Height
(NCHRP 350)
- Alternate to
other side of
cables
Applies to
median and
roadside
installations
Tolerances:
Gibraltar: +/- 1” (25.4mm)
Trinity: +/- 1” (25.4mm)
Brifen: +/- 1.2” (30mm)
Safence: +/- 0.8” (20mm)
Nucor: +/- 1” (25.4mm)
34.6”
880mm
30.9”
785mm
other side of
post (cables are
interwoven)
30.5”
775mm
A
26.6”
675mm
20”/508mm
41.5”
1054mm
41.3”/1050mm
40.6”/1030mm
A - Alternate to
20”
508mm
17.4”
442mm
24.8”
630mm
A
18.9”
480mm
18.3”
465mm
19.7”
500mm
18.5”
470mm
10”/254mm
Note:
If a system does not have ‘(4:1)’ specified, it is to be
used for 6:1 or flatter applications. The slope refers
to the slope the vehicle is travelling on in advance of
impact. The slope behind the barrier is not stipulated.
0”/0mm
Manufacturer
FHWA Acceptance Letter #
AT Product List Status
Trinity CASS S3 (4:1)
B-232
Proven
Brifen WRSF
B-82
Potential
Brifen WRSF (4:1)
B-82B1
Potential
Gregory Safence
B-88
Potential
Gregory Safence (4:1)
B-88F
Potential
Nucor Nu-Cable (4:1)
B-193
Not currently on AT
Product List
For barriers that are designed for impact on the front
only, the steepness of the slope behind the barrier is
not relevant when determining the suitability of a
HTCB for the installation.
Sheet 4 of 4
TL-3 systems
3 cables
August 3, 2016
50”/1270mm
A - Alternate to
49.5”/1257mm
other side of
post (cables are
interwoven)
42”/1067mm
41.7”
1059mm
40”/1016mm
39”
991mm
33”/838mm
30”/762mm
30”
762mm
20”/508mm
20”
508mm
33”/838mm
30”
762mm
32”/813mm
29.5”
749mm
25”
635mm
25”
635mm
20”
508mm
28.75” (730mm) Post
Height 27.75” (705mm)
W-Beam Top Rail Height
(NCHRP 350)
- Alternate to
other side of
cables
Applies to
median and
roadside
installations
38.4”
975mm
32.3”/820mm
30”
762mm
Traffic Side
41.3”/1050mm
32” (811mm) Post Height
for 31” (787mm) W-Beam
Top Rail Height
(MASH 2009)
17.4”
442mm
29.5”
749mm
28.4”
720mm
A
20”
508mm
30.9”
785mm
18.1”
460mm
25.5”
648mm
23.6”
600mm
A
Tolerances:
Gibraltar: +/- 1” (25.4mm)
Trinity: +/- 1” (25.4mm)
Brifen: +/- 1.2” (30mm)
Safence: +/- 0.8” (20mm)
Nucor: +/- 1” (25.4mm)
19.7”
500mm
21.5”
546mm
10”/254mm
Note:
If a system does not have ‘(4:1)’ specified, it is to be
used for 6:1 or flatter applications. The slope refers
to the slope the vehicle is travelling on in advance of
impact. The slope behind the barrier is not stipulated.
0”/0mm
Manufacturer
FHWA Acceptance Letter #
AT Product List Status
Gibraltar
B-137
Proven
Gibraltar (4:1)
B-137C
Proven
Trinity CASS
B-141
Proven
Trinity CASS (4:1)
B-141C
Proven
Brifen WRSF
B-82C
Potential
Gregory Safence (4:1)
B-88F
Potential
Nucor Nu-Cable
B-96
Not currently on
AT Product List
For barriers that are designed for impact on the front
only, the steepness of the slope behind the barrier is
not relevant when determining the suitability of a
HTCB for the installation.