Practice question

Which rule measures the sight-distance for a safe following distance?

  1. 1-second rule
  2. 2-second rule
  3. 3-second rule
  4. 4-second rule

Answer: A — 1-second rule

The correct answer is the 1-second rule. This rule states that you should maintain at least one second of following distance for each 10 feet of your vehicle length. This allows for enough time and space to react to any sudden stops or hazards on the road. The other options (2-second rule, 3-second rule, and 4-second rule) are not as accurate for measuring safe following distance compared to the 1-second rule.

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