Jackknifing means the accidental of an articulated vehicle (for example one towing a trailer) such that it resembles the acute angle of a folding pocket knife. If a vehicle towing a trailer skids, the trailer can push it from behind until it spins round and faces backwards. This may be caused by equipment failure, improper braking, or adverse road conditions such as an icy road surface. Anti jackknife devices Over the years systems to combat jackknifing have been developed. One system with l… (More on Jackknifing)