GMC 2003 Sierra - Manual (Page 317)

Driving at Night
Nighi driving is riiore dangerous than day driving. One
reason is that some drivers are iikeiy to be impaired — by
aleohdl qr drugs, with night vision problems, or by faligue.
Hera are some (ips on night driving.
% Drive delensively,
% Don’t drink arid drive.
% Ad)uat your inside rearview mirror lo reduce the
glare from headlamps behind you-
% Since you ten't 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. Vour
headlamps can light up only so much road ahead,
\ In remote areas, watch for animals.
% It you're tired, puJI olt the road in a safe place
and rest.
No one oan see as well at night as in ihe daytime. But
as we gel older these differences incraasa. A
50-year-old driver may raquire at 'leasi twice as much
light to see Ihg same Ihing al night as a 20-year-otd.
What you do In ihe daytime can also affect your
night vision. For example, If you spend (he day in bright
sunshine you are wise to wear sunglasses. Vour
eyes
Will have less trouble adjusting to night. But if
you're driving, don't wear sunglasses al night. They may
cul down on glare from headlamps^ but they also
make a lot of things Invisible.
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