A parking lot attendant robot is provided with a camera for capturing an image of an vehicle and a parking space, and a receiver from receiving vehicle information such as the steering angle, shift position and vehicle speed from the vehicle. Based on the knowledge of the position of the vehicle with respect to the parking space gained from the camera and the vehicle information received from the vehicle, the robot computes the optimum parking path which the vehicle should follow. The robot signals the motorist by a visual and/or auditory display and/or a hand signal as to how the steering wheel should be turned and which way the vehicle should move or stop for the vehicle to follow this parking path and to be successfully parked in the prescribed parking space.