Section 151(3) in The Bihar Motor Vehicles Rules, 1992
(3)For the purpose of conducting the test of stability the height of any stop used to prevent a wheel of the vehicle from slipping sideways, shall not be greater than two-third of the distance between the surface upon which the vehicle rests before it is tilted and that part of the rim of that wheel which is then nearest to such surface when the vehicle is loaded in accordance with the requirement of this rule.
