New & Updated with BSi PAS 68:2010.
Supersedes BSi PAS 68:2005 & 2007

Testing and classification of Vehicle Security Barriers (VSBs)

There are various international testing standards for VSBs (Vehicle Security Barriers). Those most widely referred to are the UK’s British Standards Institution (BSi) Publicly Available Specification (PAS) 68 and the US standard ASTM F2656, which is formerly the K rating. Separate advice on site assessment and installation considerations are contained in the UK’s BSi PAS 69. At time of writing, a European CEN Workshop Agreement (CWA) is being drafted using the UK’s BSi PAS 68 and 69 documents as source texts.
The PAS 68 standard defines the vehicle type, test mass and impact speed together with the required measurements, vehicle and test item details that should be recorded and reported. Post impact, and if the test is successful -the VSB stopped
and immobilised the test vehicle, then the penetration distance is measured. This reading is taken from the front of the vehicle cargo load bed to the position of the original rear face of the VSB. The dispersion distance of major debris is also measured
as this may be a consideration at certain sites.
These measurements can be used to determine which is the most suitable VSB for each individual site. It must be remembered that the impact testing uses repeatable test criteria and may not replicate the precise dynamics of real life attacks or vehicle
configurations. However, it does provide a common baseline to classify and compare VSB systems. Equipment that has been tested in accordance to the BSi PAS 68 specification requires an appropriate installation which is tailored to the individual
sites ground and environmental conditions. This ensures the adequate performance if challenged in a hostile vehicle attack.