The Pennsylvania Department of Transportation website has a “VideoLog” feature which allows you to view “video” of what you would see if you were traveling down select roads across the state. Ostensibly, bicyclists and pedestrians can use this tool to determine if road conditions on a route are suitable for travel.
Unfortunately, I believe you have to use Microsoft Internet Explorer for the site, which crashed twice while I was playing around with it. But if you can get it to work properly, it’s pretty cool.