Final answer:
When driving on a one-way street and an emergency vehicle with flashing lights is behind your car, you must change lanes to allow the emergency vehicle to pass.
Step-by-step explanation:
When driving on a one-way street and an emergency vehicle with flashing lights is behind your car, you must change lanes to allow the emergency vehicle to pass. This ensures that the emergency vehicle can reach its destination quickly and safely. Pulling over to the side of the road and stopping is not necessary when driving on a one-way street.