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LEFT TURNS

 
 
 

When turning left, ensure your vehicle’s
turning arc is wide enough to allow the
vehicle to off-track on the left side without
crossing the centre line. Your turn must be
wide enough to prevent the vehicle from
cutting the corner and hitting another vehicle.
Complete the turn by driving to the right side
of the centre line of the road entered.

Curves

Enter a curve at a speed that does not
require braking, but does allow you to
gradually accelerate while in the curve.

When entering a curve, centrifugal force
acts on the vehicle. This force pushes the
vehicle towards the outside of the curve.
Traction resists centrifugal force. The
amount of traction your wheels have with
the road’s surface determines the amount
of control that can be maintained over the
vehicle.

When speed is increased, both
momentum and centrifugal force are
greater. When entering a curve too quickly,
these forces may be greater than the
traction that is present. This can cause 

a loss of control of the vehicle. If you are
travelling at too great a speed and try to
slow down by applying the brakes, this
may cause the vehicle to skid, roll over or
jackknife.

RIGHT CURVES

 
 

Keep the front of the vehicle closer to the
centre of the road so the trailer wheels
do not roll over the curb or drop off the
pavement on the right.

LEFT CURVES

 
 

Keep the front of the vehicle closer to the
outside of the curve (right side of road) so
the trailer wheels do not cut into the other
lane of traffic on the left.

 

 CHAPTER FOUR                                                                                     OPERATING CLASS 1 VEHICLES  49

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