Unlike many countries in the world, the United traffic flows on the right-hand side of the . This may cause some confusion for persons who from a country that drives on the left. tradition of driving on the right goes back before the advent of the automobile. The first enacted to require people to drive on the was passed in the city of Philadelphia in . Cities throughout the country soon followed, and the became common.

In addition to driving on the , most Americans use various lights installed into vehicles signal other drivers of their intentions. The most lights on a car are the headlights, high , turn signals, emergency flashers, and backup lights. Headlights high beams are used in night driving. It illegal to drive with high beams constantly on they can blind drivers driving in the opposite , but headlights are required at all times after . Turn signals let other drivers know you are to make a turn to either the right the left. These signals should be used every a vehicle is about to make a turn.

flashers are continuously blinking yellow lights that drivers when their vehicle is disabled, or they are an emergency. Backup lights are white lights that on whenever the car's transmission is put into reverse mode. These lights help the driver see 's behind them when backing up. All of these lights are important for the safe operation of motor vehicle. By using these tools properly, a can make driving for all people a safe enjoyable experience.