(under subclass 242) Derailment guards in which the truck or car is provided with normally inactive wheels, which in case of derailment come into bearing upon supplemental rails other than the regular traction-rails.
SEE OR SEARCH THIS CLASS, SUBCLASS:
119, for side guides for monorail railways.
SEE OR SEARCH CLASS
105, Railway Rolling Stock,
215.1, for supplemental wheels without supplemental rails.
