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*your question doesn't really make sense... but if you mean what does the following distance when driving means... it is 2 seconds (at least) behind the car you are following. when the car in front of you passes a post etc count and see if it takes you at least 2 seconds to pass the same object at the same point of your car... hope that helps :)

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Q: What is a 3 second following distance necessary?
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Related questions

You can maintain a proper following distance by?

The technique used for determining the proper following distance is the "3- second" rule.


On the expressway maintain a 3 to 4 second following distance if the road is slippery or what adjuster distance to?

6-8 second


How many second is recommended safe following distance in good conditions?

3


On the expressway, maintain a 3-4 second following distance If the road is slippery or wet, adjust your distance to?

6-8 seconds


An advantage of keepinging a 3 -second following distance in city traffic is that you?

have time to react and avoid a collision.


Does the proper following distance vary with speed?

Yes, using either the 2-second rule or the 3-second rule means that as your driving speed increases, you leave more distance between you and the car ahead of you.


On the expressway maintain a 3-4 second following distance If the road is slippery or wet what do you adjust it to?

6-8 seconds


How do you measure following distance?

3 sec


Average distance is 3 and average time is 2.40sec what is the average speed?

speed = distance/time = 3/2.4 = 1.25 distance units/second


Is recommended safe following distance in good condition?

3 Seconds


What is the 3 second plus rule in driving?

The 3 second rule (sometimes it's a 2 second rule) refers to the spacing a vehicle should maintain when following another vehicle, regardless of speed. The theory is that the faster the vehicles are traveling, the greater the margin of safety (spacing or distance) between the vehicles will be.


What one is farther 3 miles or 21120 feet?

The second distance is greater.