GMC 2007 Envoy Denali, Owner'S Manual

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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.
•
Do not drink and drive.
•
Adjust the inside rearview mirror to reduce the
glare from headlamps behind you.
•
Since you cannot see as well, you may need
to slow down and keep more space between
you and other vehicles.
•
Slow down, especially on higher speed roads.
Your vehicle’s headlamps can light up only so
much road ahead.
•
In remote areas, watch for animals.
•
If you are tired, pull off the road in a safe
place and rest.
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 are driving, do not wear sunglasses at
night. They may cut down on glare from headlamps,
but they also make a lot of things invisible.
You can be temporarily blinded by approaching
headlamps. It can take a second or two, or even
several seconds, for your eyes to re-adjust to the
dark. When you are faced with severe glare, as
from a driver who does not lower the high beams, or
a vehicle with misaimed headlamps, slow down a
little. Avoid staring directly into the approaching
headlamps.
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