Abutment system for use on vehicle roads, has band including elevatable blade disposed into groove on road surface and including phase opposite abutments

摘要

A band with an elevatable blade is disposed into a groove cut on the road surface. The entire width of blade has a pair of abutments phase opposite from each other at 180 degree angle. In operation, the blade is pressed against the road surface through the band, when abutted by the vehicle.