Abstract: A miniature vehicle and associated track set system including: a track formed of sections placed end-to-end, each section including, across its thickness, at least one conductor taking part in the generation of a magnetic field; at least one first circuit of power supply and of generation of A.C. electric signals for exciting the conductors; and at least one miniature vehicle comprising: a first winding and a second winding having different orientations, likely to detect a magnetic field generated by the track; and at least one second electronic circuit receiving the respective amplitudes measured across the windings, programmed to determine the lateral position of the vehicle on the track.