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To avoid sudden "last minute moves," how far ahead should you look when scanning the road for hazards?

1) 500 feet
2) 4 to 5 seconds
3) 6 to 8 seconds
4) 10 to 15 seconds

Answer :

Final answer:

Drivers are advised to look ahead by 4) 10 to 15 seconds to allow enough reaction time for safe maneuvering, as a driver's reaction time and a vehicle's speed greatly influence stopping distances.

Explanation:

When scanning the road for hazards to avoid sudden "last minute moves," drivers are generally advised to look ahead by 4) 10 to 15 seconds. This allows enough time to react and safely maneuver the vehicle in case of any unexpected events on the road. For example, if a car is traveling at 55 mph, and a hazard is spotted 85 meters ahead, the driver will still travel some distance before they can react and apply the brakes, typically around 1.5 seconds of reaction time, resulting in the car covering an additional distance before stopping.

Considering that a vehicle's stopping distance increases with speed, it's clear that looking ahead is crucial. At higher speeds, the kinetic energy of the car is significantly greater, which means that more work (in terms of physics) is required to bring the car to a stop, leading to a longer stopping distance. To ensure sufficient time to react and stop safely, maintaining a vigilant lookout far ahead is essential for road safety, with 10 to 15 seconds being a recommended benchmark.

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