Braking - Pontiac 2009 Vibe Owner's Manual

Braking

See Brake System Warning Light on
page 4-17.
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
three-fourths 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 three-fourths
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, whether it is wet, dry, or icy;
tire tread; the condition of the brakes;
the weight of the vehicle; and the
amount of brake force applied.
Avoid needless heavy
braking. Some people drive
in spurts — heavy acceleration
followed by heavy braking — rather
than keeping pace with traffic.
This is a mistake. The brakes might
not have time to cool between hard
stops. The brakes will wear out much
faster if you do a lot of heavy braking.
If you keep pace with the traffic
and allow realistic following
distances, you will eliminate a lot of
unnecessary braking. That means
better braking and longer brake life.
Driving and Operating
If your vehicle's engine ever stops
while you are driving, brake normally
but do not pump the brakes. If you
do, the pedal could get harder to
push down. If the engine stops, you
will still have some power brake
assist. But you will use it when you
brake. Once the power assist is used
up, it can take longer to stop and the
brake pedal will be harder to push.
Adding non-dealer/non-retailer
accessories can affect your vehicle's
performance. See Accessories
and Modifications on page 9-3.
8-19