Scanning The Terrain - GMC Envoy Owner's Manual

Controlling your vehicle is the key to successful off-road
driving. One of the best ways to control your vehicle
is to control your speed. Here are some things to keep
in mind. At higher speeds:
•
you approach things faster and you have less time
to scan the terrain for obstacles.
•
you have less time to react.
•
you have more vehicle bounce when you drive
over obstacles.
•
you will need more distance for braking, especially
since you are on an unpaved surface.
CAUTION:
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When you are driving off-road, bouncing and
quick changes in direction can easily throw
you out of position. This could cause you to
lose control and crash. So, whether you're
driving on or off the road, you and your
passengers should wear safety belts.

Scanning the Terrain

Off-road driving can take you over many different kinds
of terrain. You need to be familiar with the terrain
and its many different features. Here are some things
to consider.
Surface Conditions: Off-roading can take you over
hard-packed dirt, gravel, rocks, grass, sand, mud, snow
or ice. Each of these surfaces affects the steering,
acceleration and braking of your vehicle in different ways.
Depending upon the kind of surface you are on, you may
experience slipping, sliding, wheel spinning, delayed
acceleration, poor traction and longer braking distances.
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?
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