Which vehicles must you allow to set off from marked bus stops?

You answered correctly. According to German traffic rules, when you see regular buses or school buses at marked bus stops with their indicator on, you must allow them to set off safely. This rule helps protect passengers and makes it easier and safer for buses—especially those carrying children—to merge back into traffic. Taxis do not have this special right at bus stops. Always drive attentively near marked bus stops and be ready to let regular or school buses rejoin the flow of traffic.