A winter storm system is set to impact Pennsylvania, bringing a mix of rain, ice, and snow, particularly affecting the Pittsburgh area and surrounding regions. As conditions worsen, PennDOT and the PA Turnpike have implemented vehicle restrictions to ensure safety on the roads. There are reports of significant ice threats for Thursday morning commutes, prompting widespread cancellations of classes and activities, including at University Park. Additionally, winter weather advisories are in place across various counties, and state and local crews are preparing for snow and ice removal. Travel disruptions are expected, with many highways facing restrictions on commercial vehicle travel. Residents are advised to avoid unnecessary travel as icy conditions may create hazardous situations.