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Maintain a Safe Following Distance (The 3 Second Rule)

Good Weather - During daylight with good, dry roads and low traffic volume, you can ensure you're a safe distance from the car ahead of you by following the "three-second rule." The distance changes at different speeds. To determine the right following distance, first select a fixed object on the road ahead such as a sign, tree or overpass. When the vehicle ahead of you passes the object, slowly count "one one thousand, two one thousand, three one thousand." If you reach the object before completing the count, you're following too closely. Making sure there are three seconds between you and the car ahead gives you time and distance to respond to problems in the lane ahead of you.

Inclement Weather, Heavy Traffic, or Night-Time Driving - In heavy traffic, at night, or when weather conditions are not ideal (eg. light rain, light fog, light snow), double the three second rule to six seconds, for added safety.

Poor Weather - If the weather conditions are very poor, eg. heavy rain, heavy fog, or heavy snow, start by tripling the three second rule to nine seconds to determine a safe following distance.

Tailgating - Following a vehicle too closely is called 'tailgating'. Tailgating is an agressive driving behaviour that is easily mistaken for road rage. Use the three-second rule to avoid tailgating. Most rear end collisions are caused by the vehicle in back following too closely. If someone is tailgating you, move to another lane or turn off the road as soon as possible and allow the tailgating vehicle to pass.


Three-Second RuleSafe Interval Should Be >3 seconds6 seconds
SpeedDistance Traveled For These Conditions >GoodMarginal
25 m.p.h.
37 ft. per second 111 ft.
222 ft.
35 m.p.h.
52 ft. per second 166 ft.
312 ft.
45 m.p.h.
66 ft. per second 198 ft.
396 ft.
55 m.p.h.
81 ft. per second243ft.

486 ft.

65 m.p.h.
96 ft. per second288 ft.
576 ft.
75 m.p.h. 111 ft. per second333 ft.
666 ft.
 Safe Following Distance in Feet

 

Do You Tailgate Dangerously? - Dr Driving (aka Leon James Ph.D.)

Those that drive family & economy cars tailgate less than those who drive sportscars and SUVs by a ratio of 2 to 1.

The results for the 10 states in this sample for which I had enough respondents to make statistical comparisons, show the worst five States with a mean of 21% dangerous tailgating: Colorado (25%), Georgia (20%), Pennsylvania (20%), Michigan (19%), Texas (19%). The lowest tailgating States are: Illinois (8%), New York (10%), Florida (14%), Ohio (15%), California (18%).

There are as you might expect, age differences as well as gender differences. Among young drivers, 19% admit to tailgating dangerously, which is about one in five. This is more than middle aged drivers (15%) and senior drivers (6%). This age pattern recurs in many aggressive driving behaviors: as we get older, we drive less aggressively. Women admit to as much tailgating as men (15%), in general, but once again there are significant influences attributable to the type of car they drive, as show in this table:


TailgatingType Of Vehicle
Sex Of DriverFamily / Economy CarsSports CarsSUVs
Male13%23%18%
Female13%20%25%

You can see that those drive the "soft" cars (family and economy) tailgate less than those who drive the "hard" cars (sports and SUV) with a ratio of two to one. This holds true for both men and women. However, with SUV drivers we see a reversal between the genders: more female SUV drivers tailgate dangerously, by their own admission, than male drivers of SUVs.

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Bob Long  - Professional driver |2008-05-11 22:27:49
If the lane to your right is empty, your in the wrong lane!

If you just got
passed on the right, your in the wrong lane!

If you can't or won't drive the
speed limit, use another road that suits your vehicle or style of driving!
 
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