Q. Local vehicle parapet strong enough to contain vehicles?

Majority of local parapets are 1.1m high in addition they are designed to resist impact from a 1.5ton car moving at a speed of 113km/hr. In some locations like in the vicinity of barriers, railway lines with 1.5m high are provided to comprise a vehicle with 24ton at a speed of50km/hr. 

Impact situation for vehicles differs from event to event and they are dependent on the size, speed and angle of incidence of the impacting vehicle. However full-scale crash test is the simplest way to prove their performance, computer simulation has been used extensively due to its lower in cost. According to the results of computer simulation and crash tests, it's established that said parapets comply with international standard for safe usage.