Control of a vehicle, Braking, Control of a vehicle -3 braking -3 – Saturn 2010 AURA Hybrid User Manual

Page 233

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Police records show that almost 40 percent 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, more than 17,000 annual
motor vehicle-related deaths have been associated with
the use of alcohol, with about 250,000 people injured.

For persons under 21, it is 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 eliminate the leading highway
safety problem is for people never to drink alcohol
and then drive.

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.

Control of a Vehicle

The following three systems help to control the vehicle
while driving — brakes, steering, and accelerator.
At times, as when driving on snow or ice, it is easy to
ask more of those control systems than the tires and road
can provide. Meaning, you can lose control of the vehicle.
See Traction Control System (TCS) on page 5-7 and
Electronic Stability Control (ESC) on page 5-6.

Adding non-dealer/non-retailer accessories can affect
vehicle performance. See Accessories and Modifications
on page 6-3.

Braking

See Brake System Warning Light on page 4-27.

Braking action involves perception time and reaction
time. Deciding to push the brake pedal is perception
time. Actually doing it 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.

5-3

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