PEnnDOT Pennsylvania Department of Transportation 
Remember, if winter weather is forecast, eliminate all unnecessary travel. This will keep you and your family safe and allow PennDOT to more easily perform its winter duties. However, if you must travel, PennDOT offers the following tips for safe driving this winter season. You may also download our Winter Driving Guide (PDF).
Information obtained from: PennDot's Website

Visit their website to read the full article on Winter Driving: