S-3.3, r. 2 - Regulation respecting rail safety

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81. The raised guard on a self-guarded frog may not be worn more than 0.95 cm (3/8 in).
If repairs are made to a self-guarded frog without removing it from service, the guarding face must be restored before rebuilding the point.
O.C. 1401-2000, s. 81.