A method and a device for determining the state of travel, whether
stationary or moving along, of a vehicle. The method includes equipping
at least one wheel (2) with a magnetic sensor (4) having an axis of
maximum sensitivity, measuring a signal at the terminals of the magnetic
sensor (4) so as to deliver a signal representative of the variations in
the values of the magnetic field as detected by the magnetic sensor, and
in providing either information that the vehicle is stationary if there
are no variations in the signal delivered, or information that the
vehicle is moving along when there is a cyclic variation in the signal.