PURPOSE: To prevent a guiding device and a tracking device from colliding against each other by equipping the guiding device with a guide signal generat ing and transmitting means and the tracking device with a 1st and a 2nd guide receiving means and a control means.

CONSTITUTION: A player wears and carries the guiding device 1 constituted of a radio device on this waist, etc. Then the guiding device 1 is equipped with a transmitting antenna 11 and an ultrasonic wave transmitting vibrator 12. On a golf cart, the tracking device 2 is mounted and equipped with a radio wave receiving antenna 21, a 1st ultrasonic wave receiving vibrator 22a and a 2nd ultrasonic wave receiving vibrator 22b. The 1st ultrasonic wave receiving vibrator 22a and the 2nd ultrasonic wave receiving vibrator 22b are arranged on the left and right side of the center line 20 of the golf cart at an equal distance. Therefore, the tracking of the guiding device 1 by the tracking device 2 can be controlled on the basis of the direction and distance and the tracking device 2 is prevented from colliding against the guiding device 1.