What is a safe distance between cars?
The rule of thumb is to maintain at least a three-second following distance, giving you time to react and avoid potentially dangerous situations.
What is the minimum following distance between two vehicles?
The Three-Second Rule
The National Safety Council recommends a minimum three-second following distance. Determining the three-second gap is relatively easy. When following a vehicle, pick an overhead road sign, a tree or other roadside marker.
How many feet are you supposed to be behind a car?
The rule of seconds advises that if you’re driving below 40 mph, you should maintain at least one second of distance for each 10 feet of vehicle length. Over 40 mph, add an extra second. For a truck driver cruising in a longer, heavier vehicle, more space and time is needed.