Brake Distance Calculator

Calculate your vehicle's total stopping distance including reaction time and braking distance

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Understanding Stopping Distance

Your vehicle's total stopping distance is made up of two components:

  • Reaction Distance: The distance traveled while you perceive the hazard and move your foot to the brake. Average reaction time is about 1.5 seconds.
  • Braking Distance: The distance traveled from when you start braking until the vehicle stops. This depends on your speed and road conditions.

Key Factors:

  • Speed: Doubling your speed quadruples your braking distance.
  • Road Conditions: Wet roads can double stopping distance; icy roads can increase it by up to 10x.
  • Tire Condition: Worn tires significantly increase stopping distance.
  • Vehicle Weight: Heavier vehicles require more distance to stop.

Note: This calculator provides estimates based on average conditions. Actual stopping distances may vary based on vehicle type, tire condition, brake condition, and driver alertness.