GMC Canyon Owner's Manual page 260

Surface Obstacles: Unseen or hidden obstacles
can be hazardous. A rock, log, hole, rut, or
bump can startle you if you are not prepared
for them. Often these obstacles are hidden
by grass, bushes, snow, or even the rise and
fall of the terrain itself. Here are some things
to consider:
•
Is the path ahead clear?
•
Will the surface texture change abruptly
up ahead?
•
Does the travel take you uphill or downhill?
There is more discussion of these subjects later.
•
Will you have to stop suddenly or change
direction quickly?
When you drive over obstacles or rough terrain,
keep a firm grip on the steering wheel. Ruts,
troughs, or other surface features can jerk the
wheel out of your hands if you are not prepared.
When you drive over bumps, rocks, or other
obstacles, your wheels can leave the ground.
If this happens, even with one or two wheels,
you cannot control the vehicle as well or at all.
Because you will be on an unpaved surface, it is
especially important to avoid sudden acceleration,
sudden turns, or sudden braking.
260
In a way, off-road driving requires a different kind
of alertness from driving on paved roads and
highways. There are no road signs, posted speed
limits, or signal lights. You have to use your own
good judgment about what is safe and what is not.
Drinking and driving can be very dangerous on
any road. And this is certainly true for off-road
driving. At the very time you need special alertness
and driving skills, your reflexes, perceptions,
and judgment can be affected by even a small
amount of alcohol. You could have a serious — or
even fatal — accident if you drink and drive or
ride with a driver who has been drinking.
See Drunken Driving on page 243.
Driving on Off-Road Hills
Off-road driving often takes you up, down, or
across a hill. Driving safely on hills requires good
judgment and an understanding of what your
vehicle can and cannot do. There are some hills
that simply cannot be driven, no matter how
well built the vehicle.