Drivers should keep a minimum following distance of:
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one second, with an additional second when approaching an intersection.
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two seconds, with an additional second for any vehicle in front of them.
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four seconds during favorable weather and traffic conditions.
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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
Drivers may need more space in front of their vehicle:As your speed increases, to stay safe it's important to:Always maintain a safe following distance from the vehicle in front of you. A safe following distance is defined as:Drivers should allow a larger space cushion when stopping:Most rear-end collisions are caused by the vehicle in the back following too closely.
What is the benefit of creating space in front of your vehicle?Following the vehicle ahead too closely is the cause of many traffic accidents. Always maintain a minimum _____ following distance.You should allow a four-second or more cushion when:Drivers should maintain a two-second safe following distance when driving at:Under ideal driving conditions, drivers should allow at least ___ seconds between their vehicle and the vehicle ahead.
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