Wheel Flange Angle for Passenger Equipment


This standard defines the minimum flange angle and the minimum length of the surface on the flange, over which the angle must be maintained. These wheel flange parameters are important in reducing the risk of low-speed wheel climb derailments. The standard also provides drawings of wheel profiles that are compliant with the requirements of this standard.

Document History
Document Number Version Publication Date Publication Related Information
APTA PR-M-S-015-06 Original 06/2/2007 Published 49 CFR §213 app. A(c)(1)(ii) (2013)


railroad wheel, flange angle, low-speed wheel climb derailment, wheel profile, rail profile, Nadal.



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