Chevrolet 2003 tracker Spezifikationen PDF herunterladen (Seite 163)

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.

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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Chevrolet 2003 tracker Spezifikationen Seite 163