Following Distance and Stopping

Key points

1. Stopping has 3 steps: perception, reaction and braking.

   Source: Handbook p. 42

   “There are three steps in stopping your vehicle”
   Oklahoma Driver Manual, Handbook p. 42

2. Use the three second rule: after the car ahead passes a fixed object, you should be able to count three seconds before you pass it.

   Source: Handbook p. 44

   “Select a fixed object, such as a tree, roadside sign or utility pole, ahead of the car in front of you. Once the car has passed the object, you should be able to count, “One thousand one, one thousand two, one thousand three,” before you pass the fixed object.”
   Oklahoma Driver Manual, Handbook p. 44

3. Or allow 1 car length for every 10 mph of speed.

   Source: Handbook p. 44

   “Allow one car length for every 10 miles per hour of speed OR”
   Oklahoma Driver Manual, Handbook p. 44

4. In bad weather or poor road conditions, increase your count to 4 seconds.

   Source: Handbook p. 44

   “In bad weather or poor road conditions, increase your count to four seconds (one thousand four).”
   Oklahoma Driver Manual, Handbook p. 44

5. In a caravan outside business or residential areas, leave at least 200 feet between vehicles.

   Source: Handbook p. 44

   “leave at least 200 feet between each vehicle so other cars or trucks can enter the line safely.”
   Oklahoma Driver Manual, Handbook p. 44

6. Watch brake lights 4 or 5 cars ahead to give yourself more time to respond.

   Source: Handbook p. 45

   “Watch for brake lights on the four or five cars down the line. It will increase your response time.”
   Oklahoma Driver Manual, Handbook p. 45

7. If someone tailgates you, slow down and encourage the driver to pass.

   Source: Handbook p. 45

   “Slow down and encourage the driver behind you to pass.”
   Oklahoma Driver Manual, Handbook p. 45

Numbers to know

3 questions from the Oklahoma practice test

1. 1. How can you apply the Oklahoma manual's three-second following rule?

   1. Use one car length for every five miles per hour in all weather
   2. Stay one second behind for every five miles per hour
   3. Count three seconds after the vehicle ahead passes a fixed object
   4. Count three vehicle lengths instead of using a roadside reference
   Show answer

   Count three seconds after the vehicle ahead passes a fixed object. Choose a fixed object such as a pole or sign and begin counting after the vehicle ahead passes it. Reaching that object after at least three seconds gives a basic safety cushion, and poor weather calls for increasing the count to four seconds. The one-second-per-five-mile choice changes the manual's method, while the shorter car-length rule understates the needed space. Vehicle lengths can be a separate estimate, but three vehicle lengths is not the stated timing test. Recheck the gap whenever speed, traffic, or pavement conditions change.

2. 2. What following-distance method does the Oklahoma manual recommend for ordinary driving conditions?

   1. Exactly 200 feet at all speeds
   2. One car length at every 25 mph
   3. A one-second count
   4. The three-second rule
   Show answer

   The three-second rule. The manual recommends a three-second cushion in normal conditions. Choose a fixed object, wait until the vehicle ahead passes it, and count one thousand one, one thousand two, one thousand three before reaching that same object. The one-second count leaves too little time for perception, reaction, and braking. A fixed 200-foot gap ignores changing speed, while the one-car-length choice gives a different measurement than the stated recommendation. In rain or poor road conditions, extend the count to four seconds. A useful cue is to begin counting at a roadside sign after the lead vehicle clears it.

3. 3. Which action is recommended when another driver is following too closely?

   1. Accelerate until the tailgater disappears
   2. Brake suddenly to force more distance
   3. Slow down and encourage the driver to pass
   4. Move into the oncoming lane
   Show answer

   Slow down and encourage the driver to pass. When someone is tailgating, the manual advises flashing your brake lights only if braking will not cause a collision, then slowing down to encourage the driver behind to pass. If that fails, pull over, stop, and let the tailgater pass, preferably where other people are present. Sudden braking can cause a rear-end crash, and accelerating or entering an oncoming lane creates additional danger. Keep your doors locked if you stop. The cue is to create space and let the aggressive follower go around rather than escalating the encounter.

Source: the Oklahoma Driver Manual, Chapter 8: Stopping and Following. This lesson is a plain English summary, not the law itself; where it differs, the manual and the statute govern. Last checked 2026-09-27.