The Minnesota Department of Transportation (MnDOT) urges the public to use extra caution when approaching traffic signals following a heavy snowfall event. Motorists and pedestrians should be prepared to stop at intersections with traffic signals, as snow-covered traffic indications can be challenging to see.

 

For reasons of energy efficiency and longer service life, the State’s traffic signals have switched from using incandescent bulbs to light-emitting diodes (LEDs). LEDs produce less than half the heat as incandescent bulbs, and do not emit enough heat to melt off snow and ice that may accumulate on them.