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Question 4987

What is reaction time?

  1. The time that passes from when the vehicle is started until it begins to move.
  2. The time that passes from when a hazard is seen until a decision is made.
  3. The time that passes from when a maneuver is started until it is completed.
Show answer and explanation

Correct answer: The time that passes from when a hazard is seen until a decision is made.

Reaction time starts when you see the hazard. During that time, you decide what to do and then move your foot or hands. That's why it's described as the time until you decide or until you act. Under normal conditions, it lasts about 0.75 seconds. In the image, the arrow runs from the eye to the brain and then down the spine.

Manual II. Cuestiones de Seguridad Vial (DGT, 2026) · Manual II. Cuestiones de Seguridad Vial (DGT, 2026) · Manual II. Cuestiones de Seguridad Vial (DGT, 2026)