90. Bulldozers.- The employer shall ensure at a construction site of a building or other construction work that- (a) an operator of a bulldozer before leaving such bulldozer- (i) applies the brakes; (ii) lowers the blade and sipper; and (iii) puts the shift lever into neutral. (b) a bulldozer is left on level ground at the close of the work for which such bulldozer is used; (c) the blade of a bulldozer is kept low when such bulldozer is moving uphill; (d) the bulldozer blades are not used as brakes except in an emergency. | 
