ALSO:

New cars have a light setting you are supposed to leave on, usually one detent from full 'off'. This 'Automatic' setting decides for you when to have parking lights on, or headlights. There are two problems with this.

1)You might disagree with what the automatic decider does. But how do you know what the automatic decider does?

2)You may have work done on your car, and the workers may return the car with the switch full off. Then you start driving around with no lights and you may not know.

Which I've seen many cars driving around in the subarctic dark completely dark.