Description:
High Cruise Control Speed Set Limit sets the maximum vehicle speed for which cruise control may be used. If the driver attempts to set a vehicle speed higher than the programmed value of High Cruise Control Speed Set Limit, the programmed value will become the cruise set speed.
It is possible to program High Cruise Control Speed Set above the programmed Vehicle Speed Limit. However, the driver can only attain speeds higher than VSL by using the ACCEL switch and “bumping” up the vehicle speed.
Available:
All electronically controlled on-highway engines covered in this handbook
Range:
Advantages:
Using cruise control can reduce driver fatigue and improve fuel economy. Fleets may want to set HCC above VSL to encourage use of cruise control.
Disadvantages (possible):
If High Cruise Control Speed Set is programmed to a value above the Vehicle Speed Limit (VSL) the truck most likely will be driven at higher speeds, therefore reducing fuel economy.
Recommendations:
Set the High Cruise Control Speed Set Limit at the highest speed you intend the vehicle to cruise.
Set the High Cruise Control Speed Set Limit 3 to 5 MPH (5 to 13 km/h) below the Vehicle Speed Limit (VSL). This allows the driver to “run at hills” in rolling terrain and allows some reserve speed for passing.
If increased security is needed, this parameter can be “locked” using the Customer Parameter Lockout.