Which of the following does stopping distance include?
- Perception distance, reaction distance
- Perception distance, braking distance
- Perception distance, reaction distance, braking distance ✓
- None of the above
Answer: C. Perception distance, reaction distance, braking distance
Total stopping distance includes perception distance, reaction distance, and braking distance.
Why this is the answer
The handbook defines total stopping distance as everything from the moment you notice a hazard until the motorcycle stops. It breaks that span into seeing and thinking (perception distance), then doing (reaction distance), and only after that do the brakes begin to work, adding braking distance. The same chapter also states plainly that stopping distance includes perception time, reaction time, and braking distance. So any answer that leaves out braking, or leaves out reaction, describes only part of the total.
Why the other answers are wrong
- A. Perception distance, reaction distance — Perception distance and reaction distance are only the noticing and responding parts; this choice leaves out the braking distance that follows once the brakes start working.
- B. Perception distance, braking distance — Perception distance and braking distance skip the reaction distance, which is the time between noticing the hazard and actually applying the brakes.
- D. None of the above — This is wrong because the handbook directly says stopping distance includes perception time, reaction time, and braking distance.
Remember it
Think see, think, do, then brake: stopping distance counts all three parts.