The Colorado Department of Transportation believes you need to be ready for snow on roads - despite unseasonably warm temps, it's sitll winter! You’ve probably seen their Game of Thrones-themed signs around the state cluing you in that “winter is coming.”

The problem is that not everybody has been heeding these warnings. Now, we've got a winter storm headed for the state.

Some people 9NEWS spoke with admitted they would not have been stuck in the heavy traffic if they had better prepared.

“We don’t have snow tires on our car,” Lindsey Lecuyer said.

She and her family were spending some time in Frisco and Silverthorne for the weekend and said they might have stayed longer if they were not worried about the possibility of a snowstorm moving into the area.

“We’re going to have to drive home a little bit earlier,” she said.

Lecuyer told 9NEWS she does have snow tires at home and CDOT is advising that she and other drivers go ahead and put them on their vehicles.

Be ready for traction laws to be put in place in the mountains. The law states that vehicles must have either snow tires or all-wheel drive. It also says all tires must have at least one-eighth of an inch of tread.

If you’re worried about the tread on your own tires, CDOT has a simple trick you can use. Take a quarter, turn it upside-down and stick it between the tread. If the top of George Washington’s head disappeared then your tires are good to go. If not, it may be time to get some new ones.