Abstract: A system and method are provided for improving the operational performance of a moving cement mixer vehicle with a rotatable mixing drum by automatically stopping the rotation of the mixing drum at select moments. The system may include a sensor adapted to deliver a signal indicative of an operational parameter, such as steering angle of the vehicle, and a processing unit adapted to receive the signal from the sensor and deliver a control signal based on the signal for stopping rotation of the mixing drum.

Abstract: An air brake system for use with a vehicle is provided. This system includes an antilock braking system component; a stability system component, wherein the stability system component works in combination with the antilock braking system component to stabilize the motion of the vehicle under predetermined conditions; and a means for automatically determining the operability of stability system component, wherein the means determining the operability of stability system component provides at least one of an audible indicator of stability system operability and an electronic indicator of stability system operability.