WIRE ROPE SAFETY FENCE
TESTING TO INTERNATIONAL STANDARDS
The development of BRIFEN WRSF has been on going since 1970. This has involved
in excess of 20 full scale crash tests (ie 626 metres between the anchorages) and many more crash tests over short
distances. The vehicles involved have been sedans and American pick-up trucks of gross weight 750kg class, 900kg
class and 2000kg class.
To ensure BRIFEN WRSF acceptance worldwide, the testing carried out has been in accordance with -
- The UK Highway Agency Specification TD32, (in the UK).
- The European CEN Specification, (in France, Sweden and the UK).
- The American NCHRP350 Level 3 Specification, (in the UK and USA).
BRIFEN has been fully tested at 1.2m, 2.4m and 3.2m post spacing in the 4 wire
rope system. BRIFEN 3 wire rope system has been tested in both Sweden and the UK at 2.4m and 3.2m post spacing. Anchor Spacing (m)
Post Spacing (m)
Vehicle Mass (kg)
Speed (kph)
Angle (deg)
Impact Severity (kJ)
Measured Deflection (m)
Test
The following gives an indication of the range of tests undertaken.
106.1
3.2
1505
115
20
90.0
1.73
MIRA Test No. 436017
626.4
2.4
1500
113
20
86.4
1.70
MIRA E167
192.0
2.4
2010
102
25
144.1
1.65
NCHRP350 Test
100.8
3.2
1492
111
19
75.6
1.40
VTI Test No. 940412.1
106.1
3..2
903
113
20
52.0
1.31
MIRA 1995
100.8
3.2
1460
114
19
77.5
1.30
VTI Test No.940407.1
100.8
3.2
1450
113
19
75.4
1.30
VTI Test No. 940411.1
106.1
3.2
909
119
20
58.1
1.30
MIRA 1995
103.2
2.4
1260
83
30
83.7
1.20
Inret, France 1992
626.4
2.4
750
113
20
43.2
1.20
MIRA F190
319.2
1.0
1480
115
20
88.3
1.00
MIRA 1991
100.8
3.2
875
104
19
38.3
1.00
VTI Test No. 940425.1
319.2
1.0
753
113
20
43.4
0.86
MIRA 1991
In addition to the standard European and American test BRIFEN has been successfully tested in a 'verge' test with
a sheer drop immediately behind the fence. This test was based on the UK Highway Agency specification TD32 and
was repeated to ensure accurate results. The impact speed was 110kph with impact angle 20 degrees. Real life
impacts on bridges confirm the successful use of BRIFEN WRSF in this application.
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