Fig. 3.
Driving variables around the obstacles: (A) speed (P = 0.04); (B) lane position (P = 0.8); (C) throttle (P = 0.04); and (D) steering (P = 0.73). For speed, deviation from reference is the difference between subject speed and the goal of 45 miles per hour; for lane position, deviation from reference is the distance from the center of the lane; for throttle, deviation from reference is the position of pedal location; and for steering, deviation from reference is the position of the steering wheel from neutral or straight ahead.