Final answer:
When following a vehicle 10-15 feet or less behind, use your low beams to avoid blinding the driver in front and ensure safe driving conditions. Maintain a safe following distance of one car length for every 10 mph of speed.
Step-by-step explanation:
When following a vehicle 10-15 feet or less behind, you should use your low beams.
The purpose of using low beams is to avoid blinding the driver in front of you with the glare from your headlights. By using low beams, you provide enough light to see the road ahead without causing discomfort to the driver in front. This ensures safe driving conditions for both vehicles involved.
Additionally, it is important to maintain a safe following distance of at least one car length (about 20-25 feet) for every 10 mph of speed, to allow for enough reaction time in case of sudden stops or emergencies.