Road vehicle provided with a cooling duct for the cooling of a brake

A road vehicle (1) provided with a cooling duct (16) for the cooling of a brake (13); the cooling duct (16) has: an air intake (17) arranged at the inlet of the cooling duct (16); a shutter (19), which is mobile, so as to move between a closing position, in which the shutter (19) closes the air intake (17), and an opening position, in which the shutter (19) leaves the air intake (17) unobstructed; and an electric actuating device (21), which controls the movement of the shutter (19) and, therefore, moves the shutter (19) between the closing position and the opening position and is mechanically configured to be normally open and, therefore, in the absence of a power supply, to push the shutter (19) towards the opening position.