System for warning drivers accessing dual carriageways and motorways in the wrong sense, comprises optical warning, physical non harmful barrier, photography and oncoming driver warning

摘要

A driver accessing a dual carriageway or motorway in the wrong sense receives a luminous optical warning and if he does not slow down is presented with a non harmful retractable physical barrier consisting of thin strips (4). Drivers proceeding in the correct direction are warned and a camera (5) identifies the time, date and errant vehicle for the information of the police