From the National Weather Service:
Special Weather Statement National Weather Service Boston/Norton MA 258 PM EST Tue Dec 3 2019
...LIGHT SNOW AND FALLING TEMPERATURES WILL CAUSE ROADS TO BECOME SLIPPERY DURING THE EVENING COMMUTE ACROSS EASTERN MASSACHUSETTS... Another band of snow will move across portions of eastern Massachusetts during this evening`s commute. The snow may coat some roadways and, as temperatures fall over the next few hours, patchy ice may form and roads could become slippery especially if untreated. Motorists are advised to drive with caution and take their time reaching their destinations.