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www.saferoads.com.au
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+61 3 5945 6600
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USA Version 1.4
March 2019
Page 8
System Deflection
A sufficient clear zone must be allocated between the HV2 Safety Barrier and the work zone to allow for deflection
of the barrier during an impact. The below tables show the estimated deflection during an impact, and are based on
a combination of crash testing and interpolation.
TL3 - 5,000lbs (2,270kg) vehicle
Speed
25°
20°
15°
10°
5°
62mph
(100km/h)
4ft 10in¹
(1.47m)
3ft 11in
(1.18m)
2ft 11in
(0.88m)
2ft
(0.59m)
1ft
(0.30m)
56mph
(90km/h)
4ft 5in
(1.33m)
3ft 7in
(1.07m)
2ft 8in
(0.8m)
1ft 10in
(0.54m)
11in
(0.27m)
50mph
(80km/h)
3ft 11in
(1.18m)
3ft 2in
(0.95m)
2ft 4in
(0.71m)
1ft 7in
(0.48m)
10in
(0.24m)
43mph
(70km/h)
3ft 5in
(1.03m)
2ft 9in
(0.83m)
2ft 1in
(0.62m)
1ft 5in
(0.42m)
9in
(0.21m)
37mph
(60km/h)
2ft 11in
(0.89m)
2ft 4in
(0.71m)
1ft 9in
(0.53m)
1ft 3in
(0.36m)
8in
(0.18m)
31mph
(50km/h)
2ft 6in
(0.74m)
2ft
(0.59m)
1ft 6in
(0.44m)
1ft
(0.30m)
6in
(0.15m)
25mph
(40km/h)
2ft
(0.59m)
1ft 7in
(0.48m)
1ft 3in
(0.36m)
10in
(0.24m)
5in
(0.12m)
¹Crash Tested Result
TL4 - 22,000lbs (10,000kg) vehicle:
Speed
15°
10°
5°
56mph (90km/h)
7ft 10in¹
(2.37m)
5ft 3in
(1.58m)
2ft 8in
(0.79m)
50mph (80km/h)
7ft
(2.11m)
4ft 8in
(1.41m)
2ft 4in
(0.71m)
43mph (70km/h)
6ft 1in
(1.85m)
4ft 1in
(1.23m)
2ft 1in
(0.62m)
37mph (60km/h)
5ft 3in
(1.58m)
3ft 6in
(1.06m)
1ft 9in
(0.53m)
31 mph (50km/h)
4ft 4in
(1.32m)
2ft 11in
(0.88m)
1ft 6in
(0.44m)
25mph (40km/h)
3ft 6in
(1.06m)
2ft 4in
(0.71m)
1ft 2in
(0.35m)
¹Crash Tested Result
