Buses Only road sign (R121) Wet concrete safety sign It helps prevent serious injury

It helps prevent serious injury through exposure

or site vehicles

and maintenance bays where hazardous substances are used or stored

Yield to traffic circulating within the traffic circle

Buses Only road sign (R121) Wet concrete safety sign It helps prevent serious injuryThe Buses Only road sign (R121) is a regulatory command sign used to indicate that only buses are permitted to proceed beyond the sign or use the marked lane or route. Purpose and function This sign reserves access for bus operations, improving public transport flow and reducing delays caused by mixed traffic. It also supports safer passenger movement around bus corridors and interchanges. Typical applications Dedicated bus lanes and bus priority