The “four-second rule” refers to how drivers should:
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Cross an intersection.
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Turn at stop signs.
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Yield to other cars.
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Follow another vehicle.
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Explanation
Always maintain a safe distance between your vehicle and the one ahead of you. If the pavement is dry, maintaining a 4-second following distance allows you to safely steer or brake to avoid a hazard. If you are following too closely and the vehicle in front abruptly stops or slows down, you won't have enough time to prevent a collision.
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