Motor vehicle operator fuel-conservation feedback device. Final technical report

A summary is given of the work performed to evaluate a number of existing fuel and vacuum monitoring devices from a technical and human factors viewpoint; the experimental analysis of the device presentation from the operator (user) standpoint both on the basis of subjective preference and objective driving performance; and the utilization of these results to incorporate the best features of these devices into the design of a vehicle operator fuel conservation feedback unit. The laboratory and human factors evaluations are described, the road test experiments are detailed, and the design and development of a retrofit unit is presented along with results of the breadboard unit construction and evaluation.