Chevrolet 1994 Astro Bedienungshandbuch Seite 159

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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’re driving on snow or ice, it’s 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’s
perception time.
Then you have to bring up your foot and do
it.
That’s
reaction time.
Average
reaction time
is about 314 of
a
second. But that’s 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 314 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’s pavement or gravel); the condition
of
the road (wet, dry,
icy); tire tread; and the condition of your brakes.
4-5
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