Section 144 in The Bihar Motor Vehicles Rules, 1992
144. Mudguards.
(1)Every motor vehicle other than a tractor, shall be provided with mudguards or mud flaps or both to catch so far as practicable mud or water thrown up by the rotation of the wheels, unless adequate protection against such mud or water being thrown up, is afforded by the body of the motor vehicle.(2)Such mudguard or mud flap shall cover at least 2/3rd of the diameter when measured vertically and the total breadth of the rear wheel or wheels.
