Commuters found the going easier Friday evening. It is a big difference compared to 24 hours ago.
An 18-wheeler jackknifed on I-80 near Waukee causing a 25 car pile-up where two other semis ended up in the ditch.
With the extra weight in the back, some may think semis might have a little more grip to the road but some of the drivers we spoke to said that once they begin to slide, it's virtually impossible to recover.
"You’ve got 40-thousand pounds, if not more coming up behind you. As long as you can keep the trailer behind you, you're good. Once it starts coming around, you're down. That truck is gone,” driver Paul Woods said.
"When it's too slick, there's no business being out there. It's just too dangerous,” Larry Power added.
With roads taking a turn for the worst so quickly, a lot of drivers called it a night early and even avoided the roads during the morning rush hour.
It's not a requirement for semis to get off the roads during poor driving conditions.
Iowa State Patrol says there aren't any separate laws for truck drivers relating to winter weather.
When they are involved in an accident, State Patrol can have a real mess on their hands.
"When we have a semi that jackknifes out there, chances are it's going to take up both lanes of traffic. Last night, we couldn't open up the interstate for a few hours," Sgt. Scott Bright said.
That accident in Waukee wasn't the only 25-car-pile-up caused after a semi jackknifed.
Along I-35 near Cummings there was a very similar scene with dozens of cars sliding into the ditch.
However, a lot of trucks do make the decision to avoid the roads when the weather turns for the worst.