CONCRETE MIXER VEHICLE WITH AUTONOMOUS SLUMP CHECK

A concrete mixer truck includes a chassis, an engine, a mixing drum supported on the chassis, a motor configured to rotate the mixing drum, a slump sensor configured to measure a pressure correlated with a slump of a mixture within the mixing drum, and a controller in communication with the engine, the motor, and the slump sensor. The controller is configured to verify an interlock criteria is satisfied, receive an initiate command for a slump check procedure, in response to receiving the initiate command, command the motor to a slump check state, measure the pressure from the slump sensor for a predetermined amount of time, and average the pressure over the predetermined amount of time to produce a slump value.