Several suburban public school systems will open two hours late on Friday because of icy roads and frigid weather.

“Since the temperatures will be about the same as [Thursday] morning, we wanted to err on the side of caution,” said Max Pugh, a spokesman for Prince George’s County schools.

In addition, public schools in Fairfax and Prince William counties, along with Manassas city schools, will also impose the two-hour delay.

Pugh said school officials are concerned about students walking to bus stops before daybreak and high school students driving to school on icy roads.

The delay “will give it time to warm up a little more . . . give us more time to resalt areas,” Pugh said.

Some school districts in the Washington region have come under fire over closing school days after Tuesday’s snowstorm.

Loudoun County officials decided Wednesday to shut down school through the end of the week and cancel midterm exams. Farther afield, public schools in Stafford, Fauquier and Spotsylvania counties will also be closed.