Movements with lateral constraint

The literature on terminal control tasks and continuous tracking tasks suggests a possible model for tasks where the subject must guide a vehicle at his own speed along a course defined by a tolerance band. The model predicts a linear relationship between the average velocity and the width of the tolerance band. Three experiments are described which simulate vehicle guidance by pencil and paper experiments for courses consisting of straight lines and circles. The predictions of the morel were confirmed, suggesting that a general measure for the case of control of vehicle (or other controlled system) is possible, using this technique.