Automatic Guided Vehicle

Automatic guided vehicle (1) comprising a fork carriage (2) with a fork (3), a propulsion drive system (4), a sensor (5) to acquire position data of objects located in a detection field (7) and a computer (6). The vehicle comprises a reference member (10) located in the detection field (7) of the sensor rigidly secured to a common rigid frame (11) with the sensor (5). The sensor (5) periodically acquires control position data indicative of a position of the reference member (10). The computer (6) periodically compares the control position data with a reference value stored in a memory (14).