49 C.F.R. § 229.71 Clearance above top of rail.
Title 49 - Transportation
No part or appliance of a locomotive except the wheels, flexible nonmetallic sand pipe extension tips, and trip cock arms may be less than 2
Title 49: Transportation
PART 229—RAILROAD LOCOMOTIVE SAFETY STANDARDS
Subpart C—Safety Requirements
Suspension System
§ 229.71 Clearance above top of rail.
