Trench barrier for use in road, has two units including upper side constituting major part inclined according to opposite slope where upper side has flat part adjacent to lateral side of trench

摘要

The barrier has two units with lower side (2) having proper profile of a trench. A lateral side of the trench is measured perpendicular to longitudinal direction of the lower side. An upper side has major part inclined according to opposite slope. The upper side has a flat part adjacent to the lateral side of the trench. A notch has the lateral side curved and turned towards the lateral side of the trench.