light OLDSMOBILE SILHOUETTE 1993 Workshop Manual

Your Driving and the Road
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 going in the same direction.
If
you’ve ever tried to steer a vehicle on
wet ice, you’ll understand this.
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 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? Let up on the 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 conditions.
Under less favorable conditions you’ll
want to go slower. If you need to
reduce your speed as you
approach a curve, do it before 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.
When you drive into a curve at night,
it’s harder to see the road ahead
of you
because it bends away from the straight
beams of your lights. This is one good
reason
to drive slower.
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YOUP Driving and the Road
Ofi-Road Recovery
You may find sometime that your right
wheels have dropped
off the edge of a
road onto the shoulder while you’re
driving.
If the level of the shoulder is only
slightly below the pavement, recovery
should be fairly easy. Ease
off the
accelerator and then,
if there is nothing
in the way, steer
so that your vehicle
straddles the edge
of the pavement. You
can turn the steering wheel up to
?4 turn
until the right front tire contacts the
pavement edge. Then
turn your steering
wheel
to go straight down the roadway.
If the shoulder appears to be about four
inches
(100 mm) or more below the
pavement, this difference can cause
problems.
If there is not enough room to pull entirely onto the shoulder and stop,
then follow the same procedures. But
if
the
right front tire scrubs against the
side of the pavement, do
not steer more
sharply.
With too much steering angle,
the vehicle may jump back onto the road
with
so much steering input that it
crosses over into the oncoming traffic
behre you can bring
it back under
control. Instead, ease
off again on the
accelerator and steering input, straddle
the pavement once more, then
try again.
Passing
The driver of a vehicle about to pass
another
on a two-lane highway waits for
just the right moment, accelerates,
moves around the vehicle ahead, then
goes back into the right lane again.
A
simple maneuver?
Not necessarily! Passing another vehicle
on a two-lane highway is a potentially
dangerous move, since the passing
vehicle occupies the same lane as
oncoming traffic for several seconds.
A
miscalculation, an error in judgment, or
a brief surrender to frustration or anger
can suddenly put the passing driver face
to face with the worst of all traffic
accidents-the head-on collision.
So here are some tips for passing:
“Drive ahead.” Look down the road,
to
the sides, and to crossroads for
situations that might affect your
passing patterns.
If you have any doubt
whatsoever about making
a successful
pass, wait for a better time.
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Watch for traffic signs, pavement
markings, and lines.
If you can see a
sign up ahead that might indicate a
turn or an intersection, delay your
pass.
A broken center line usually
indicates it’s all right to pass
(providing the road ahead is clear).
Never cross a solid line on your side
of the lane or a double solid line, even
if the road seems empty
of approaching
traffic.
vehicle you want to pass isn’t aware of
your presence, tap the horn a couple
of times before passing.
Do not get too close to the vehicle you
want to pass while you’re awaiting an
opportunity. For one thing, following
too closely reduces your area of
vision, especially if you’re following a
larger vehicle. Also, you won’t have
adequate space if the vehicle ahead
suddenly slows or stops. Keep back a
reasonable distance.
If you suspect that the driver of the
When it looks like a chance to pass is
coming up, start to accelerate but stay
in the right lane and don’t get too
close. Time your move
so you will be
increasing speed as
the time comes to
move into the other lane. If the way is
clear to pass,
you will have a “running
start” that more than makes up for the
distance you would lose by dropping
back. And
if something happens to
cause you
to cancel your pass, you
need only slow down and drop back
again and wait for another opportunity.
slow vehicle, wait your turn. But take
care that someone isn’t trying to pass
you as you pull out
to pass the slow
vehicle. Remember
to glance over
your shoulder and check the blind
spot.
If other cars are lined up to pass a
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.)
Try not to pass more than one vehicle
at a time on two-lane roads.
Reconsider before passing the
next
vehicle.
vehicle too rapidly. Even though the
brake lights are not flashing,
it may be
slowing down or starting to turn.
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.
Don’t overtake a slowly moving
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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 on
the road to make a “mirrored
surface”-and slow down when
you
have any doubt.
Remember: Any anti-lock braking
system
(ABS) helps avoid only the
braking skid. Steer the way you want to
go.
Driving at Night
Night driving is more dangerous than
day driving. One reason
is that some
drivers are likely to be impaired-by
alcohol or drugs, with night vision
problems, or by fatigue.
Here are some tips on night driving.
Drive defensively. Remember, this is
the most dangerous time.
Don’t drink and drive. (See the Index
under Drunken Driving for more on
this problem.)
Adjust your inside rearview mirror to
reduce the glare from headlights
behind you.
Since you can’t see as well, you may
need to slow down and keep more
space between
you and other vehicles.
It’s hard to tell how fast the vehicle
ahead is going just by looking at its
taillights.
speed roads. Your headlights can light
up only
so much road ahead.
Slow down, especially on higher
In remote areas, watch for animals.
If you’re tired, pull off the road in a
safe place and rest.
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Night Vision
No one can see as well at night as in the
daytime. But as we get older these
differences increase.
A 50-year-old
driver may require at least twice as
much light
to see the same thing at night
as a 20-year-old.
What you do in the daytime can also
affect your night vision. For example,
if
you spend the day in bright sunshine you
are wise to wear sunglasses. Your eyes
will have less trouble adjusting to night.
But if you're driving, don't wear
sunglasses at night. They may cut down
on glare from headlights, but they also
make a lot of things invisible that should
remain visible-such as parked cars,
obstacles, pedestrians, or even trains
blocking railway crossings. You may
want to put on your sunglasses after you
have pulled into a brightly-lighted
service or refreshment area. Eyes shielded from that glare
may adjust
more quickly to darkness back on the
road. But be sure to remove your
sunglasses before you leave the service
area.
You can be temporarily blinded by
approaching lights. It can take a second
or two, or even several seconds, for your
eyes to readjust to the dark. When you
are faced with severe glare (as
from a
driver who doesn't lower the high
beams, or a vehicle with misaimed
headlights), slow down a little. Avoid
staring directly into the approaching
lights. If there is a line of opposing
traffic, make occasional glances over the
line of headlights to make certain that
one of the vehicles isn't starting to move
into your lane. Once you are past the
bright lights, give your eyes the to
readjust before resuming speed.
High Beams
If the vehicle approaching you has its
high beams on, signal by flicking yours
to
high and then back to low beam. This
is the usual signal to lower the headlight
beams. If the other driver still doesn't
lower the beams, resist the temptation to
put your high beams on. This only
makes two half-blinded drivers.
On a freeway, use your high beams only
in remote areas where you won't impair
approaching drivers.
In some places,
like cities, using high beams is illegal.
When you follow another vehicle on a
freeway or highway, use low beams.
True, most vehicles now have day-night
mirrors that enable the driver to reduce
glare. But outside mirrors are not
of this
type and high beams from behind can
bother the driver ahead.
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A kw More Night Driving
Suggestions
Keep your windshield and all the glass
on your vehicle clean-inside and out.
Glare at night is made much worse by
dirt
on the glass. Even the inside of the
glass can build up a film caused by dust.
Tobacco smoke also makes inside glass
surfaces very filmy and can be a vision
hazard
if it’s left there.
Dirty glass makes lights dazzle and
flash more than clean glass would,
making the pupils of your eyes contract
repeatedly. You might
even want to keep
a cloth and some glass cleaner in your
vehicle if
you need to clean your glass
frequently. Remember that your headlights light up
far less of a roadway when you are in a
turn or curve.
Keep your eyes moving; that way, it’s
easier to pick out dimly lighted objects.
Just as your headlights should be
checked regularly for proper aim,
so
should your eyes be examined regularly.
Some drivers suffer from night
blindness-the inability to see in dim
light-and aren’t even aware of
it.
Driving in tne Rain
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
traction.
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.
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
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I Hydroplaning
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.
You might not be aware
of hydroplaning.
You could drive along for some time
without realizing your tires aren’t in
constant contact with the road. You
could find out the hard way: when
you
have to slow, turn, move out to pass-or
if you get hit by a gust
of wind. You could
suddenly find yourself
out of control. 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, and be careful.
Some Other Rainy Weather Tips
Turn on your headlights-not just your
parking lights-to help make you more
visible to others.
Look for hard-to-see vehicles coming
from behind. You may want to use
your headlights even in daytime
if it’s
raining hard.
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. If the road spray is
so heavy you
are actually blinded, drop back. Don’t
pass until conditions improve. Going
more slowly is better than having an
accident.
Use your defogger if it helps.
Have good tires with proper tread
depth. (See the
Index under Tires.) 163
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Your Diving and the Road
Driving in Fog, Mist and Haze
Fog can occur with high humidity or
heavy frost. It can be
so mild that you
can see through
it for several hundred
feet (meters). Or
it might be so thick
that you can see only a few feet (meters)
ahead. It may come suddenly
to an
otherwise clear road. And it can be a
major hazard.
When you drive into a fog patch, your
visibility will be reduced quickly. The
biggest dangers are striking the vehicle
ahead or being struck by the one
behind. Try to “read” the fog density
down the road.
If the vehicle ahead
starts to become less clear or, at night,
if
the taillights are harder to see, the fog is
probably thickening. Slow down
to give
traffic behind you a chance to slow down. Everybody then has a better
chance to avoid hitting the vehicle
ahead.
A patch of dense fog may extend only
for a few feet (meters) or for miles
(kilometers); you can’t really tell while
you’re
in it. You can only treat the
situation
with extreme care.
One common fog condition-sometimes
called mist or ground fog-can happen
in weather that seems perfect, especially
at night
or in the early morning in valley
and low, marshy areas. You can be
suddenly enveloped in thick, wet haze
that may even coat your windshield. You
can often spot these fog patches or mist
layers with your headlights. But sometimes they can be waiting for you
as you come over a hill or dip into a
shallow valley. Start your windshield
wipers and washer to help clear
accumulated road dirt. Slow down
carefully.
lips on Driving in Fog
If you get caught in fog, turn your
headlights
on low beam, even in
daytime. You’ll see-and be seen-
better. Use your fog lights.
Don’t use your high beams. The light
will bounce off the water droplets that
make up fog and reflect back at you.
Use your defogger. In high humidity,
even a light buildup of moisture on the
inside
of the glass will cut down on your
already limited visibility. Run your
windshield wipers and washer
occasionally. Moisture can build up on
the outside glass, and what seems to be
fog may actually be moisture on the
outside
of your windshield.
Treat dense fog as an emergency. Try to
find a place to pull off the road. Of
course you want to respect another’s
property, but you might need to put
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something between you and moving
vehicles-space, trees, telephone poles,
a private driveway, anything that
removes you from other traffic.
If visibility is near zero and you must
stop but are unsure whether you are
away from the road, turn your lights on,
start your hazard warning flashers, and
sound your horn at intervals or when
you hear approaching traffic.
Pass other vehicles in fog only if you
can
see far enough ahead to pass safely.
Even then, be prepared to delay your
pass if you suspect the fog is worse up
ahead. If other vehicles
try to pass you,
make it easy for them.
City Driving
One of the biggest problems with city
streets is the amount of traffic on them.
You’ll want to watch out for what the
other drivers are doing and pay attention
to traffic signals.
Here are ways to increase your safety
in
city driving:
Know the best way to get to where you
are going. Try not to drive around
trying
to pick out a familiar street or
landmark. Get a city map and plan
your trip into an unknown part of
the
city just as you would for a cross-
country trip.
Try to use the freeways that rim and
crisscross most large cities. You’ll save
time and energy. (See the next section,
Freeway Driving.)
Treat a green light as a warning
signal.
A traffic light is there because
the corner is busy enough to need it.
When a light turns green, and just
before you
start to move, check both
ways for vehicles that have not cleared
the intersection or may be running the
red light.
remember that
they are for ideal road,
weather and visibility conditions. You
may need
to drive below the posted
limit in bad weather or when visibility
is especially poor.
clear of intersections when you see
or
hear emergency vehicles.
Obey all posted speed limits. But
Pull to the right (with care) and stop
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Your Driving and the Road
166
Freeway Drivjng
Mile for mile, freeways (also called
thruways, parkways, expressways,
turnpikes,
or superhighways) are the
safest
of all roads. But they have their
own special rules.
The most important advice
on freeway
driving is: Keep up with traffic and keep to the right. Drive at the same speed
most
sf the other drivers are driving.
Too-fast or too-slow driving breaks a smooth traffic
flow. Treat the left lane
on
a freeway as a passing lane.
Entering the Freeway
At the entrance there is usually a ramp
that leads
to the freeway. If you have a
clear view
of the freeway as you drive
along the entrance ramp, you should
begin to check traffic. Try
to determine
where you expect to blend with the flow.
If traffic is light, you may have
no
problem. But if it is heav, find a gap as
you move along the entering lane and
time your approach. Try
to merge into
the gap
at close to the prevailing speed.
Switch on your turn signal, check your
rearview mirrors as you move along,
and glance over your shoulder as often
as necessary. Try to blend smoothly
with the traffic flow.
Driving on the Freeway
Once you are on the freeway, adjust
your speed to the posted limit
or to the
prevailing rate
if it’s slower. Stay in the
right lane unless you want to pass.
If
you are on a two-lane freeway, treat the
right lane
as the slow lane and the left
lane as the passing lane.
If you are on a three-lane fieeway, treat
the right lane
as the slower-speed
through lane, the middle lane as the
higher-speed through
lane, and the left
lane
as the passing lane.
Before changing lanes, check your
rearview
mirrors. Then use your turn
signal. Just before you leave the lane,
glance quickly over your shoulder to
make sure there isn’t another vehicle
in
your “blind” spot.
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