Drivers should keep a minimum following distance of:
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four seconds during favorable weather and traffic conditions.
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two seconds, with an additional second for any vehicle in front of them.
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one second, with an additional second when approaching an intersection.
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55 milliseconds, with an additional millisecond for every drop of rain in a 2 miles radius.
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Explanation
Rear-end collisions are almost always caused by drivers following too closely. Drivers should keep a minimum following distance of four seconds during normal weather and traffic conditions. They must increase this distance if the weather or traffic conditions worsen. Maintaining a large enough following distance helps avoid collisions, because it allows drivers to have more time to react to sudden hazards.
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Other questions in the same category: Safe Following Distances
At highway speeds, in normal conditions, a safe following distance is at least _____ from the vehicle ahead of you.Allow a larger space cushion when stopping:You need extra following distance when:To maintain a good “space cushion” between your vehicle and the one ahead, you should use the:To maintain an adequate "space cushion" around their vehicle, drivers need to:A safe following distance when driving in normal conditions at speeds of 30 mph or slower is:To safely stop in emergencies always allow a space cushion of at least:Drivers should allow an extra cushion of space when following:Under ideal driving conditions, drivers should allow at least ___ seconds between their vehicle and the vehicle ahead.Drivers may need more space in front of their vehicle:
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