System for controlling vehicle overspeeding via control of one or more exhaust brake devices

A system for controlling overspeeding of a vehicle carrying an internal combustion engine, the system comprising:

• a first speed sensor configured to produce a speed signal indicative of road speed of the vehicle,
• an exhaust brake device responsive to a control signal to apply braking torque to the engine,
• a first control circuit including a memory having instructions stored therein that are executable by the first control circuit to determine a desired speed of the vehicle, and if the road speed of the vehicle exceeds the desired speed of the vehicle by more than a threshold speed to determine a target brake torque required to reduce the road speed of the vehicle speed to the desired speed of the vehicle, and
• a second control circuit configured to control operation of the engine, the second control circuit including a memory having instructions stored therein that are executable by the second control circuit to produce the control signal based on the target brake torque to thereby control the road speed of the vehicle to the desired speed of the vehicle.