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What is the stopping distance for a vehicle traveling at 70 mph?

  1. 240 ft

  2. 315 ft

  3. 400 ft

  4. 500 ft

The correct answer is: 315 ft

The stopping distance for a vehicle traveling at 70 mph is approximately 315 feet. This distance is calculated by combining the thinking distance (the distance a vehicle travels while the driver reacts to a hazard) and the braking distance (the distance required to stop the vehicle once the brakes are applied). At high speeds like 70 mph, the thinking distance increases significantly, as it takes time for the driver to perceive the hazard, decide to stop, and then react. The braking distance also increases due to the higher speed, as more time and distance are required to slow down the vehicle effectively. In practice, at 70 mph, the combined stopping distance can be influenced by road conditions, vehicle type, and load. However, the figure of 315 feet is a standard estimate used in UK driving theory. Thus, when preparing for driving assessments or real-world driving, understanding this stopping distance is crucial for safe driving practices.