The safety metric 1000 feet corresponds to approximately how many seconds to react?

• A. 2 seconds
• B. 3 seconds
• C. 5 seconds
• D. 7 seconds

Answer: (C)

The idea here is converting a safety distance into a time to react. When you’re about 1000 feet from a hazard or from a leading vehicle, you’re expected to have enough time to notice the danger, decide on a response, and begin applying braking. That typically works out to roughly five seconds of reaction time. This five-second window combines the normal perception-and-decision time with additional margin for faster speeds or slower reactions, giving you a practical buffer in emergencies. Shorter intervals like two or three seconds don’t provide enough time at the speeds you’ll be driving, while seven seconds is more than the standard guideline. So, 1000 feet is commonly equated to about five seconds to react.