What is the minimum distance behind another vehicle you should maintain when driving?

Maintaining a safe following distance is crucial for safe driving, and the recommendation to keep at least two car lengths behind the vehicle in front of you is based on the principle of giving yourself enough space to react to any sudden stops or emergencies. This distance allows for adequate time to brake without a collision, especially considering that vehicles may stop unexpectedly. Additionally, weather conditions, road types, and vehicle types can affect stopping distances, so having a larger gap is generally safer.

In typical driving situations, especially under normal conditions, the rule of maintaining a distance of at least two car lengths can help drivers ensure they have enough time to respond appropriately. While there are other guidelines, such as the "three-second rule," that are often suggested, keeping a physical distance of at least two car lengths serves as a simple visual reminder for drivers to avoid tailgating and ensure safety on the road.