Motorcycles Only Regulatory Post Mounted Sign - Dia 619.1 R2/RA2 (Face Only)The circular sign with the silhouette of a car depicted on it is the sign for all vehicles prohibited apart from motorcycles or similar. This sign known by its diagram number 619. 1 is most commonly found in towns and cities. It is often used with supplementary signs for exception rules, please consult the TSRGD guidelines for this. We also have signs available for All Vehicles Prohibited 617 and Motorcycles Prohibited 619. 2. This sign is available