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Once a hazard is spotted, a driver's initial reaction time to the hazard is generally?

  1. 1/4 to 1/2 second

  2. 1/2 to 3/4 second

  3. at least one second

  4. 2 seconds

The correct answer is: 1/2 to 3/4 second

When a driver spots a hazard, their initial reaction time is typically between 1/2 to 3/4 seconds. This means that it takes them approximately half a second to 3/4 of a second to recognize and react to the hazard. Option A, 1/4 to 1/2 second, is too short of a time frame for the initial reaction to a hazard. Option C, at least one second, is too long of a time frame for the initial reaction. Option D, 2 seconds, is also too long and unrealistic for a driver's initial reaction to a hazard.