Are used to prevent pedestrians walking into the road and are generally situated at potentially hazardous locations, such as Pedestrian Crossings, Schools, Shopping areas etc. Both systems are of modular design and come in standard panel lengths.
Are provided to separate people from vehicular traffic. It must be borne in mind that they are not a vehicle restraint system; i.e. they are not designed to resist the penetration of an errant vehicle. The P4 system differs from standard guardrails in so much as it is designed for applications where there is a likelihood of a fall from height.