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@ Section 4 Your Driving and the Road
Here you’ll find information about driving on different kinds of roads and in varying weather conditions. We’ve also
included many other useful tips on driving.
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4-13 4- 14 Defensive Driving
Drunken Driving Control of a Vehicle
Braking Steering
Off-Road Recovery
Passing
Loss of Control
Driving at Night Driving in Rain and
on Wet
Roads
City Driving
Freeway Driving
Before Leaving on a Long
Trip
Highway Hypnosis
Hill and Mountain Roads
Winter Driving
Loading Your Vehicle
Towing a Trailer
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F A
Defensive Driving
The best advice anyone can give about driving is:
Drive defensively.
Please start with a very Important safety device in your
Buick: Buckle up. (See “Safety Belts” in the Index.)
Defensive driving really means “be ready for anything.”
On city streets, rural roads or freeways, it means
“always expect the unexpected.”
Assume that pedestrians
or other drivers are going to be
careless and make mistakes. Anticipate what they might
do. Be ready for their mistakes.
Rear-end collisions are about the most preventable
of
accidents. Yet they are common. Allow enough
following distance. It’s the best defensive driving
maneuver, in both city and rural driving. You never
know when the vehicle in front of you is going to brake
or turn suddenly.
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Drunken Driving
Death and injury associated with drinking and driving is
a national tragedy. It’s the number one contributor to
the highway death toll, claiming thousands of victims
every year.
Alcohol affects four things that anyone needs to drive
a vehicle:
Judgment
Muscular Coordination
0 Vision
0 Attentiveness.
Police records show that almost half
of all motor
vehicle-related deaths involve alcohol. In most cases,
these deaths
are the result of someone who was drinking
and driving. In recent years, some 17,000 annual motor
vehicle-related deaths have been associated with the use
of alcohol, with more than
300,000 people injured.
Many adults
-- by some estimates, nearly half the
adult population
-- choose never to drink alcohol, so
they never drive after drinking. For persons under 21,
it’s against the law in every
U.S. state to drink alcohol.
There
are good medical, psychological and
developmental reasons for these laws. The
obvious way to solve this highway safety problem
is for people never to
hnk alcohol and then drive. But
what
if people do? How much is “too much” if the
driver plans to drive? It’s a lot less than many might
think. Although it depends on each person and situation,
here is some general information on the problem.
The Blood Alcohol Concentration (BAC)
of someone
who is drinking depends upon four things:
0 The amount of alcohol consumed
0 The drinker’s body weight
0 The amount of food that is consumed before and
during drinking
consume the alcohol.
0 The length of time it has taken the drinker to
According to the American Medical Association, a
180-lb. (82 kg) person who drinks three 12-ounce
(355 ml) bottles of beer in an hour will end up with a
BAC
of about 0.06 percent. The person would reach the
same BAC by drinking three 4-ounce
(120 ml) glasses
of wine or three mixed drinks if each had
1 - 1/2 ounces
(45 ml) of a liquor like whiskey, gin or vodka.
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It’s the amount of alcohol that counts. For example, if
the same person drank three double martinis
(3 ounces
or
90 ml of liquor each) within an hour, the person’s
BAC would be close to 0.12 percent. A person who
consumes food
just before or during drinking will have a
somewhat lower
BAC level.
There is a gender difference, too. Women generally have
a lower relative percentage of body water than men. Since
alcohol is carried in body water, this means that
a
woman generally will reach a higher BAC level than a
man of her same body weight when each has the same
number of drinks.
The law
in many U.S. states sets the legal limit at a BAC
of 0.10 percent. In a growing number of U.S. states, and
throughout Canada, the limit
is 0.08 percent. In some
other countries, it’s even lower.
The BAC limit for all
commercial drivers in the United States is
0.04 percent.
The
BAC will be over 0.10 percent after three to six
drinks (in one hour). Of course, as we’ve seen, it
depends on how much alcohol is in the drinks, and how
quickly the person drinks them.
But
the ability to drive is affected well below a BAC of
0.10 percent. Research shows that the driving skills of
many people are impaired at a
BAC approaching
0.05 percent, and that the effects are worse at night. All
drivers are impaired at
BAC levels above 0.05 percent.
Statistics show that
the chance of being in a collision
increases sharply for drivers who have a
BAC of
0.05 percent or above. A driver with a BAC level of
0.06 percent has doubled his or her chance of having a
collision. At
a BAC level of 0.10 percent, the chance of
this driver having a collision is 12 times greater; at a
level
of 0.15 percent, the chance is 25 times greater!
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The body takes about an hour to rid itself of the alcohol
in one drink.
No amount of coffee or number of cold
showers will speed that up. “1’11 be careful” isn’t the
right answer. What if there’s an emergency, a need
to
take sudden action, as when a child darts into the street?
A person with even a moderate BAC might not be able
to react quickly enough to avoid the collision.
There’s something else about drinking and driving that
many people don’t know. Medical research shows that
alcohol in
a person’s system can make crash injuries
worse, especially injuries to the brain, spinal cord or
heart.
This means that when anyone who has been
drinking
-- driver or passenger -- is in a crash, that
person’s chance
of being killed or permanently disabled
is higher than if the person had not been drinking.
A CAUTION:
DriLing and then driving is very dangerous.
Your reflexes, perceptions, attentiveness and
judgment can be affected by even
a small amount
of alcohol. You can have a serious
-- or even
fatal
-- collision if you drive after drinking.
Please don’t drink and drive or ride with
a driver
who has been drinking. Ride home in a cab; or if
you’re with a group, designate
a driver who will
not drink.
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Control of a Vehicle Braking
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. 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.
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. 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; the condition of your brakes; the weight of the
vehicle and the amount of brake force applied.
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