Freezing rain Wednesday morning turned roads into solid sheets of ice, making cars slip and slide.

"When you have conditions like this, we're gonna get out there as best we can and have the trucks treat the roads, but there could end up being icy conditions," explained Ron Young with PennDOT.

Icy conditions are exactly what we got. There were multiple accidents from a driver sliding off the road in Salisbury Township, to a delivery truck and car both spinning on the slick streets and slamming into each other in Upper Macungie Township.

Area emergency crews had a busy morning responding to calls.

"Because of the auto accidents there were 12 between the hours of 9 a.m. and 10:30 a.m.," shared Captain John Christopher with the Allentown Fire Department.

It was a close call for a Northwestern Lehigh School District Bus carrying 21 elementary students in Lynn Township. State Police say a pick-up lost control and crashed into the bus.

"All the kids were fine," said Lt. John Nederostek with the State Police. "School district did an outstanding job getting up here with another bus, they got them back to school, they're fine and both of the drivers are fine as well so there's no injuries."

In Schuylkill County a section of I-81 had reduced speeds for nearly four hours, and big-rig wrecks caused part of the highway to shut down. Authorities say Wednesday night could be much of the same, especially across bridges, ramps and up in the mountains.

"Motorists just need to go a little slower than they normally would," added Young. "Be alert for what's called black ice."

Officials also say fog could move in and create another hazard out on the roads.