49 CFR § 229.71
Clearance above top of rail
November 18, 2020
No part or appliance of a locomotive except the wheels, flexible nonmetallic sand pipe extension tips, and trip cock arms may be less than 21⁄2 inches above the top of rail.
No part or appliance of a locomotive except the wheels, flexible nonmetallic sand pipe extension tips, and trip cock arms may be less than 21⁄2 inches above the top of rail.