Chevrolet 2004 Tahoe Spezifikationen PDF herunterladen (Seite 302)

100

101

Control of a Vehicle

You have three systems that make your vehicle go where

you want it to go. They are the brakes, the steering and

the accelerator. All three systems have to do their work

at the places where the tires meet the road.

Sometimes, as when you are driving on snow or ice, it is

easy to ask more of those control systems than the tires

and road can provide. That means you can lose control of

your vehicle. Also see Traction Assist System (TAS) on

page 4-9.

Braking

Braking action involves perception time and

reaction time.

First, you have to decide to push on the brake pedal.

That is perception time. Then you have to bring up your

foot and do it. That is reaction time.

Average reaction time is about 3/4 of a second. But that

is only an average. It might be less with one driver

and as long as two or three seconds or more with

another. Age, physical condition, alertness, coordination

and eyesight all play a part. So do alcohol, drugs and

frustration. But even in 3/4 of a second, a vehicle moving

at 60 mph (100 km/h) travels 66 feet (20 m). That

could be a lot of distance in an emergency, so keeping

enough space between your vehicle and others is

important.

And, of course, actual stopping distances vary greatly

with the surface of the road (whether it is pavement

or gravel); the condition of the road (wet, dry, icy); tire

tread; the condition of your brakes; the weight of

the vehicle and the amount of brake force applied.

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