Roughly how long does it take to see a hazard, decide to stop, and get your foot onto the brake? · Q-0309

Roughly how long does it take to see a hazard, decide to stop, and get your foot onto the brake?

1. a About a quarter of a second in total
2. b About one and a half seconds in total
3. c About three seconds in total
4. d It is instantaneous for an alert driver

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