What is the recommended following distance in normal driving conditions?

The recommended following distance in normal driving conditions is 2 seconds behind the vehicle in front. This guideline is based on the principle of providing adequate space to react to sudden stops or emergencies without increasing the risk of a collision. Maintaining a 2-second gap allows drivers enough time to assess the situation ahead and apply the brakes if necessary.

To calculate this distance, you can use a reference point, such as a road sign or a tree. When the vehicle in front passes this point, count two seconds before you reach it. This practice accounts for various factors such as vehicle speed, road conditions, and visibility, ensuring that drivers maintain a safe distance even if conditions change.

The other options suggest either less or more space, which may not be optimal for the average driving situation. A following distance of 1 second may not provide adequate reaction time, particularly at higher speeds or in varying traffic conditions. While a 4-second gap might be safe and useful under adverse weather conditions or when driving larger vehicles, it could be excessive and lead to unnecessary traffic congestion in normal conditions. Thus, adhering to the 2-second rule strikes a balance between safety and practicality.