Minn. R. 8830.9901
SIGNS, ACTIVE WARNING DEVICES, AND LOCATIONS
Subpart 1. Crossbuck sign. Subp. 2. Stop sign at grade crossing. Subp. 3. Grade crossing active warning device. Subp. 4. Grade crossing active warning device; cantilever type. Subp. 5. Grade crossing active warning device with gate. Subp. 6. Typical location for grade crossing active warning device. Subp. 7. Standard grade crossing active warning device location.