To maintain a safe stopping distance, you should:

• Count to two seconds after the car in front passes an object
• Match the speed of the car in front of you exactly
• Count to four seconds after the car in front passes an object
  Explanation:

  "A safe stopping distance within four (4) seconds gives you the opportunity to stop safely without colliding with a person, vehicle, or object."
• Maintain a constant distance regardless of speed or weather conditions