1. Dorey , A. D. ( 1979 ). Free-control variables and vehicle handling . Ph D thesis , University of Melbourne .
2. —, Good , M. C. and Joubert , P. N. ( 1978 ). The effect of free-control variables on automobile handling-a pilot study. Human Factors Group Report HF 34 , Department of Mechanical Engineering , University of Melbourne .
3. —, —— ( 1980 ). A variable free-control characteristic vehicle .Veh. Syst. Dynamics( in press ).
4. Sensitivity of Driver-Vehicle Performance to Vehicle Characteristics Revealed in Open-loop Tests