PEC017
5/3/2018 Page 29 of 105
9.0 Vehicle Speed Limiter
Overview
The Vehicle Speed Limiter functionality is designed to improve fuel economy by
reducing the maximum vehicle speed and limiting the maximum vehicle acceleration.
Standard Feature
Without Vehicle Speed Limiter
The speed of the vehicle will be limited to the maximum value of Maximum
Accelerator Pedal Vehicle Speed (N162) or Maximum Cruise Control Target Speed
(N006).
Feature Options
Vehicle Speed Limiter
Vehicle Acceleration Limiter
Vehicle Speed Limiter
On Greenhouse Gas (GHG) compliant vehicles, GHG Maximum Speed Limit (N170)
will limit the overall maximum speed of the vehicle, until the GHG Expiration Distance
(N169) has been exceeded. The GHG expiration mileage is available in the chassis
information within PVP, and may not be changed. For example, if Maximum
Accelerator Pedal Vehicle Speed (N162) is set to 55 mph, Maximum Cruise Control
Target Speed (N006) is set to 70 mph, and Maximum Vehicle Speed Limit (N170) is
set to 64 mph, the vehicle can be driven to a maximum speed of 55 mph with the
pedal. If Cruise Control is enabled the vehicle speed may be increased to a
maximum of 64 mph, as the vehicle will not exceed the value of Maximum Vehicle
Speed Limit (N170) when the engine is fueled.
For non-GHG compliant vehicles, or vehicles that have exceeded the GHG
expiration mileage, GHG Maximum Speed Limit (N170) is ignored, allowing
Maximum Accelerator Pedal Vehicle Speed (N162) and Maximum Cruise Control
Target Speed (N006) to determine the overall maximum speed of the vehicle. Table
8.1 illustrates how the overall maximum vehicle speed is determined.
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