When should you use your low beams if you are following another car in heavy traffic?

Using low beams when following another car in heavy traffic is crucial for maintaining safety and visibility without blinding the driver ahead of you. The correct distance for switching to low beams is within 200 feet. This distance allows you to provide adequate visibility for yourself while ensuring that your headlights do not create glare for the other driver, which helps prevent accidents.

In heavy traffic, high beams can reflect off the back of another vehicle or create excessive brightness, which can impede the vision of the driver in front of you. By using low beams, you help ensure that you can see clearly without being a distraction to others on the road. Adjusting your headlights properly in various driving situations is an essential skill for safe driving.