A tracking control circuit for directly controlling the tracking (i.e., the steering) of an automatic guide vehicle (AGV) without utilizing a central processing unit (CPU) for control. The circuit controls the tracking of the AGV by comparing a first induced voltage with a second induced voltage to sense the tracking state (i.e., whether the AGV is veering right or left of the appropriate path), and then providing to a servo interface board either a voltage obtained by subtracting a reference voltage from the first induced voltage or a voltage obtained by subtracting the second induced voltage from the reference voltage. Which voltage is provided is determined in accordance with the sensed result of the tracking state.