From PennDOT.gov

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

Interstate 79 from the beginning of I-79 in Erie County to Exit 141 (Route 285/Geneva/Cochranton).

Interstate 86 from beginning of I-86 to the New York state line.

Interstate 90 from the Ohio state line to the New York state line.

On roadways with speed restrictions, commercial vehicles not affected by restrictions on these or other roadways must move to the right lane.