Which vehicles are allowed to use the special lane marked like this?

This traffic sign indicates a special lane reserved exclusively for regular buses. According to German traffic rules, only buses used for public transportation are allowed to use lanes marked with this sign. Trucks, cars, and other vehicles are not permitted to enter or drive in this lane. The purpose is to prioritize public transport, improve traffic flow, and encourage the use of buses by reducing delays caused by mixed traffic. Always respect this restriction to avoid fines and maintain smooth public transport operations.