Tramcars and Buses Only Post Mount Sign - Dia. 953.1 R2/RA2 (Face Only)This sign is designed to indicate that the only trams or trams and buses are permitted to use the road tramway ahead. This sign is most commonly placed where a tramway leaves an existing carriageway. This sign can be supplemented with time restriction signs or authorised vehicle signage. We can provide this sign from 450 900mm. Normally this sign is 750mm but is increased to 900mm when it is difficult for drivers to follow the correct route.