Buses Only road sign (R121) Wet concrete safety sign and maintenance bays where hazardous

and maintenance bays where hazardous substances are used or stored

Tourist attractions and visitor facilities

delayed response

Temporary Motor Cars Only road sign (TR117)

or site vehicles

Buses Only road sign (R121) Wet concrete safety sign and maintenance bays where hazardousThe 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