When should you ideally increase your following distance to five seconds?

Increasing your following distance to five seconds is especially important when driving at speeds greater than 50 mph in adverse conditions. At higher speeds, the stopping distance increases significantly, and adverse conditions such as rain, snow, or fog can further impact your vehicle's traction and braking capabilities. A five-second following distance allows for more reaction time, ensuring that you can safely respond to any unexpected situations that may arise, such as sudden stops from the vehicle in front of you or changes in road conditions. This practice helps maintain safety not just for you, but for fellow road users as well.

In contrast, during good weather conditions, a shorter following distance may be safer; in crowded areas, drivers should still maintain a safe distance, but the emphasis on increased distance is less critical than in adverse conditions. Driving at night requires vigilance, but it does not necessarily require a five-second following distance unless other factors, such as speed and road conditions, warrant it.