1996 PONTIAC PONTIAC tires

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
3/4 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
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 &stances 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
ProCarManuals.com

Braking in Emergencies
At some time, nearly every driver gets into a situation
that requires hard braking.
If you have anti-lock, you can steer and brake at the
same time. However,
if you don’t have anti-lock, your
first reaction
-- to hit the brake pedal hard and hold it
down
-- may be the wrong thing to do. Your wheels can
stop rolling. Once they do, the vehicle can’t respond to
your steering. Momentum will
carry it in whatever
direction it was headed when the wheels stopped rolling.
That could be off the road, into the very thing you were
trying to avoid, or into traffic.
If you don’t have anti-lock, use
a “squeeze” braking
technique.
This will give you maximum braking while
maintaining steering control. You do this by pushing on
the brake pedal with steadily increasing pressure.
In an emergency, you will probably want to squeeze the
brakes hard without locking the wheels. If you hear or
feel the wheels sliding, ease
off the brake pedal. This
will help you retain steering control. (If you
do have
anti-lock, it’s different: see “Anti-Lock Brakes” in
the Index.)
In many emergencies, steering can help you more than
even the very best braking.
Steering
Power Steering
If you lose power steering assist because the engine‘
stops or the system is not functioning, you can steer but
it will take much more effort.
Variable Assist Steering
This steering system provides lighter steering effort for
parking and when driving at low speeds. Steering effort
will increase at higher speeds for improved road feel.
Steering Tips
Driving on Curves
It’s important to take curves at a reasonable speed.
A lot of the “driver lost control” accidents mentioned on
the news happen on curves. Here’s why:
Experienced driver or beginner, each of us is subject to
the same laws
of physics when driving on curves. The
traction of the tires against the road surface makes it
possible for the vehicle to change its path when you turn
the front wheels. If there’s no traction, inertia will keep
the vehicle gqing in the same direction. If you’ve ever
. . ,,: ., .. %
A,. .c .. j: tried to steer a vehicle on wet ice, you’ll understand this.
ProCarManuals.com

The traction you can get in a curve depends on the
condition of your tires and the road surface, the angle at
which
the curve is banked, and your speed. While you’re
in a curve, speed is the one factor you can control.
Suppose you’re steering through a sharp curve.
Then you suddenly apply the brakes. Both control
systems
-- steering and braking -- have to do ~eir
work where the tires meet
the road. Unless you have
four-wheel anti-lock brakes, adding
the hard braking
can demand too much of those places. You can
lose control.
The same thing can happen if you’re steering through a
sharp curve and you suddenly accelerate. Those two
control systems
-- steering and acceleration -- can
overwhelm
those places where the tires meet the road
and make you lose control.
What should you do
if this ever happens? Ease up on the
brake or accelerator pedal, steer the
vehicle the way you
want it to
go, and slow down.
Speed limit signs near curves warn that you should
adjust your
speed, Of course, the posted speeds are
based on good weather and road conditiolls. Under less
favorable conditions you’ll want to go slower.
If you need to reduce your speed as you approach a
curve, do it b’efore you enter the curve, while your front
wheels are straight ahead.
Try to adjust your speed so you can “drive” through the
curve. Maintain a reasonable, steady speed. Wait to
accelerate until you
are out of the curve, and then
accelerate gently into the straightaway.
Steering in Emergencies
There are times when steering can be more effective than
braking. For example, you come over
a hill and find a
truck stopped
in your lane, or a car suddenly pulls out
from nowhere, or a child darts out from between parked
cars and stops right in front of you. You can avoid these
problem
by braking -- if you can stop in time. But
sometimes you,can’t; there isn’t room. That’s the time for
evasive action
-- steering around the problem.
Your Pontiac can perform very well in emergencies like
these. First apply your brakes
-- but, unless you have
anti-lock, not enough
to lock your wheels. (See
“Braking in Emergencies” earlier in this section.) It
is
better t’o remove as much speed as you can from a
possible collision. Then steer around
the problem, to -the
left ‘or right depending on the space available.
I’ . , .I ,. ’ .~
.. . . ,.- , . . .. .
. .. :.
. . - I 1-.. -’ . ..
ProCarManuals.com

Check your mirrors, glance over your shoulder, and
start your left lane change signal before moving out
of the right lane to pass. When you are far enough
ahead of the passed vehicle to see its front in your
inside mirror, activate your right lane change signal
and move back into the right lane. (Remember that
your right outside mirror
is convex. The vehicle you
just passed may seem to be farther away from you
than it really
is.)
on two-lane roads. Reconsider before passing the
next vehicle.
Don’t overtake a slowly moving vehicle too rapidly.
Even though the brake lamps are not flashing, it may
be slowing down or starting to turn.
Try not to pass more than one vehicle at a time
0 If you’re being passed, make it easy for the
following driver to get ahead of you. Perhaps you
can ease a
little to the right.
Loss of Control
Let’s review what driving experts say about what
happens when the three control systems (brakes, steering
and acceleration) don’t have enough friction where
the
tires meet the road to do what the driver has asked. In
any emergency, don’t give up. Keep trying to
steer and constantly seek an escape route or area
ot
less danger.
Skidding
In a slud, a driver can lose control of the vehcle.
Defensive drivers avoid most skids by
taking reasonable
care suited to existing conditions, and by not “overdriving”\

those conditions. But skids
are always possible.
The three types of skids correspond to your Pontiac’s
three control systems.
In the braking skid, your wheels
aren’t rolling. In the steering or cornering skid, too
much speed or steering in a curve causes tires to slip and
lose cornering force. And in the acceleration skid, too
much throttle causes the driving wheels
to spin.
A cornering skid and an acceleration skid are best
handled by easing your foot
off the accelerator pedal.
If your vehicle starts to slide, ease your foot off the
accelerator pedal and quickly steer the way you want the
vehicle to go.
If you start steering quickly enough, your
vehicle may straighten out. Always be ready for a
second skid if it occurs.
ProCarManuals.com

Of course, traction is reduced when water, snow, ice,
gravel or other material is on the road. For safety,
you’ll
want to slow down and adjust your driving to these
conditions. It is important to slow down on slippery
surfaces because stopping distance will be longer and
vehicle control more limited.
While driving on
a surface with reduced traction, try
your best to avoid sudden steering, acceleration or
braking (including engine braking by shifting to a lower
gear). Any sudden changes could cause the tires to slide.
You may not realize the surface is slippery until your
vehicle is skidding. Learn to recognize warning
clues -- such as enough water, ice or packed snow MI
the road to make a “mirrored surface” -- and slow down
when you have any doubt.
If you have the anti-lock braking system, remember: It
helps avoid
only the braking skid. If you do not have
antblock, then
in a braking skid (where the wheels are
Driving at Night
no longer rolling), release enough pressure on the brakes
to get the wheels rolling again. This restores steering
control. Push the hake pedal
down steadily when you
have to
stop suddenly. As long as the wheels are rolling, Night
driving is more dangerous than day driving. One
reason is
that some drivers are likely to be impaired -- by
alcohol QT drugs, with night vision problems, or by fatigue.
you
will have steering control.
4-14
~.
ProCarManuals.com

Driving in Rain and on Wet Roads Rain and wet roads can mean driving trouble. On a wet
road, you can’t stop, accelerate or turn as well because
your tire-to-road traction isn’t as good as
on dry roads.
And, if your tires don’t have much tread left, you’ll get
even less tractiqn.
It’s always wise to go slower and be
cautious
if rain starts to fall while you are driving. The
surface may get wet suddenly when
your reflexes are
tuned for driving on dry pavement.
I The heavier the rain, the harder it is to see. Even if your
windshield wiper blades
are in good shape, a heavy rain
can make
it harder to see road signs and traffic signals,
pavement markings, the edge
of the road and even
people walking.
It’s wise to keep your windshield wiping equipment in
good shape and keep your windshield washer tank filled
with washer fluid. Replace your windshield wiper
inserts when
they show signs of streaking or missing
areas on the windshield, or when strips
of rubber start to
separate from
the inserts.
4.16
ProCarManuals.com

Hydroplaning . ., ... 1, , , 2 ,2-,a7:-~+.,: <. .:< ’. -- ’.
Hydroplaning is dangerous. So much water can build up
under your’tires that they can actually ride
on the water.
This can happen if the road is wet enough and you’re
going fast enough. When your vehicle
is hydroplaning,
it has little or no contact with the road.
Hydroplaning doesn’t happen often. But it can
if your
, tires haven’t much tread or if the pressure in one or
more is low.
It can happen if a lot of water is standing on
the road. If you can see reflections from trees, telephone
poles or other vehicles, and raindrops “dimple” the
water’s surface, there could be hydroplaning,
Hydroplaning usually happens at higher speeds. There
just isn’t
a hard and fast rule about hydroplaning. The
best advice is to slow down when
it is raining.
Driving Through Deep Standing Water
NOTICE:
If you drive too quickly through deep puddles or
standing water, water can come in through your
engine’s air intake and badly damage your
.engine. Never drive through water that is slightly
lower than the underbody
of your vehicle. If you
can’t avoid deep puddles or standing water, drive
through them very slowly.
S,ome Other Rainy Weather Tips
Turri on your low-beam headlamps -- not just
your
parking lamps -- to help make you more visible
to others.
Besides slowing down, allow some extra following
distance. And be especially careful when
you pass
another vehicle. Allow yourself more clear room
ahead, and be prepared
to have your view restricted
by road spray.
Have good tires with proper tread depth. (See
“Tires” in
the Index.)
4-18
ProCarManuals.com

The exit speed is usually posted.
Reduce your speed according to your speedometer, not
to your sense of motion. After driving for any distance
at higher speeds, you may tend to think you are going
slower than you actually
are.
Before Leaving on a Long Trip
Make sure you're ready. Try to be well rested. If you
must
start when you're not fresh -- such as after a day's
work
-- .don't plan to make too many miles that first part
of the journey. Wear comfortable clothing and shoes you
can easily drive in.
Is your vehicle ready for a long trip? If you keep it
serviced and maintained, it's ready to go. If it needs
service, have it done before starting out. Of course,
you'll.find experienced and able service experts in
Pontiac dealerships all across
North America. They'll be
ready and willing to help if you need it. Here are some things
you can check before a trip:
0
0
0
a
a
0
a
Windshield Washer Fluid: Is the reservoir full? Are
all windows clean inside and outside?
Wiper Blades:
Are they'in good shape?
Fuel, Engine Oil, Other Fluids: Have you checked
all levels?
Lamps: Are they all working? Are the lenses clean?
Tires: They are vitally important to a safe,
trouble-free trip.
Is the tread good enough for
long-distance driving?
Are the tires all inflated to the
recommended pressure?
Weather Forecasts: What's the weather outlook
along your route? Should you delay your trip a
short
time to avoid a major storm system?
Maps:
Do you have up-to-date maps?
4-21
ProCarManuals.com