IMPROVED WHEEL CHOCK DEVICE FOR ROAD VEHICLES

The present invention relates to a wheel chock device (10) comprising a wedge-shaped body (11) defined below by at least one substantially flat wall for resting against a ground (12) and at the top, by at least one wall for bearing against a wheel (13), inclined with respect to the wall for resting against the ground (12), the wall for bearing against the wheel (13) adjoining the wall for resting against the ground (12) at a tip (17) of the wedge-shaped body (11), the wall for bearing against the wheel (13) comprising a blocking portion (13a) distal from the tip (17), configured to block a movement of the wheel, and a wheel receiving portion (13b) proximal to the tip (17), characterized in that it comprises at least one breakage element (19,19',29,29',29") constrained to the wedge-shaped body (11) so as to interfere with a wheel engaged against the blocking portion (13a) of the wall for bearing against the wheel (13), the at least one breakage element (19,19',29,29',29") being configured to at least partially irreversibly deform when a wheel engages the blocking portion (13a) of the wedge-shaped body (11).