Trip-lights need not be used during gathering operations at working faces.
225 ILCS 705/22.05
A trip-light or reflecting signal shall be used on the rear of trips pulled or pushed by a locomotive, also on the front of trips lowered into slopes
Laws 1953, p. 701.
Official source: Illinois General Assembly. Reproduced from public-domain Illinois statutes; confirm against the official source for the current text. Not legal advice.