The stop sign is folded up against the side of the bus .
It is impossible that cars are lined up behind the bus , which has it 's stop sign extended .
It is impossible that cars are lined up behind the bus , which has it 's stop sign extended .
It is probably the case that cars are lined up behind the bus , which has it 's stop sign extended .
Cars are lined up behind the bus , which has it 's stop sign extended .