Road Barrier System News

A guide to EN 1317 testing: for compliant road restraint systems

What is EN 1317?

The EN1317 European Standard signifies the testing criteria that road restraint systems are required to meet, according to Highways England.

The standard, which was established in February 1989 within the overall framework of the Construction Products Directive 89/106/EEC, must be met by a vehicle restraint system if it is to be awarded the CE marking and introduced in Europe.

Which vehicle restraint and road barrier systems are included?
Under EN1317, vehicle restraint systems are subject to a number of crash tests, with systems being divided into performance classes, which we'll come on to later.

Different types of crash systems are evaluated in different parts of the standard, including:

• Safety barriers
• Temporary safety barriers
• Parapets
• Terminals
• Vehicle attenuators
• Transitions
• Crash cushions
• Miscellaneous

EN 1317-2

EN 1317-2 outlines performance classes, impact test acceptance criteria and test methods for safety barriers, including vehicle parapets. Vehicle restraint systems are assessed on their ability to react to 11 vehicle impact tests, with differing vehicle mass (900 to 38,000kg), speed (65 to 110km/h) and impact angle (8 to 20º) taken into account in each test. The VRS is then given a containment level and a working width class depending on the results.

Containment performance class

There are 15 containment levels denoted in EN 1317-2 and these are split into four categories based on the vehicle restraint system's performance. T1, T2 and T3 are low angle containment levels, suitable for resisting crashes of shallow impact involving mainly cars and rigid HGVs. N1 and N2 are adjudged to be normal containment levels and able to withstand high-speed car crashes, while H1, L1, H2, L2, H3 and L3 are all higher containment, for crashes involving anything but the heaviest articulated HGVs. Very high containment levels are awarded H4a, H4b, L4a or L4b status.

Working width class
The vehicle impact tests also award 'working width classes', which relates to how much the barrier deforms on impact. This class is used to decide how much space is needed between the barrier and the side of the road for the system to operate properly and safely. Working width classes are divided into eight different classes. Working width class W1 is the least deformed (and so the sturdiest), with the remaining classes up to W8 being gradually more susceptible to deformation during impact.

Our products
Here at Highway Care Ltd, we're always striving to provide maximum protection for road users. That's why we came up with the BG800®. Certified to EN1317 compliant road restraint systems standard, the BG800®. is suitable for both permanent and temporary locations and has been awarded N2 and H2 containment level class status. This means that they are able to safely withstand impacts from cars and buses travelling at speeds of up to 110 km/h.

Contact Highway Care
If you need compliant road barrier systems which offer a safe solution to both drivers and pedestrians, you can rest safe in the knowledge that our products meet current European standards.

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