The commissioner by rule shall require that uniform warning signs be placed at grade crossings. There must be at least three distinct types of uniform warning signs: a home crossing sign, for use in the immediate vicinity of the crossing; an approach crossing sign, to indicate the approach to a grade crossing; and, when deemed necessary, a stop sign with the word "stop" plainly appearing on it, to indicate that persons on the highway approaching the crossing, whether in vehicles or otherwise, must come to a stop before proceeding over the grade crossing.
Official Publication of the State of Minnesota
Revisor of Statutes