PHOENIX – Arizona Department of Transportation snowplows will operate around the clock when winter storms hamper travel on state highways. For Interstate 40 between Flagstaff and Williams, the highest freeway stretch in Arizona, an innovation known as the TowPlow helps give ADOT an edge by allowing just one driver to clear snow and ice from two lanes.
The TowPlow is a steerable trailer with a 26-foot blade that attaches to the back of a snowplow. Two TowPlows are assigned to I-40 west of Flagstaff, an area that often sees intense snowfall.