PHILADELPHIA (CBS) — Due to the winter storm, the speed limit on several major roads in Pennsylvania have been reduced.

PennDOT is urging motorists to avoid unnecessary travel, but those who must travel will see speeds reduced to 45 mph on the following expressways:

  • Interstates 76, 95, 476, 676
  • U.S. Routes 1, 30, 202, 422
  • State Routes 63, 100 Spur and 309

PennDOT crews will continue to treat roadways throughout the storm until precipitation stops and roads are clear.

PennDOT officials also remind motorists to allow plenty of space when driving near plow trucks. Also, for their own safety and the safety of plow operators, motorists should never attempt to pass a truck while it is plowing or spreading winter materials.

The speed reduction is in place until further notice.