The North Texas Tollway Authority began plowing toll roads with convoys Thursday night, using motor graders and truck-mounted plows to move snow and slush to the shoulder and applying deicer. That work will continue throughout Friday as staff work 12-hour shifts.

Thursday brought snow to parts of North Texas and the Panhandle. Here are the totals, and when Texans can expect road conditions to improve.

The National Weather Service said a tenth of an inch of ice could accumulate on raised surfaces, such as bridges, and some areas could get up to a quarter inch. But the main travel impacts are expected to be from sleet and snow.