The issue here is the limitation of the current GIS technology. Each "path" is just a segment that has attributes. Unfortunately, you're pretty much limited to "dirt road", "two-lane", "four-lane", "four lane divided", etc. You might have other info like speed limit, but you don't have truly useful attributes like: maximum safe speed in dry conditions and level of service. It's really useful when you can get the real-time updates, but even most states don't have a computerized automated way to disburse their road closings. Most have a "state warning point" where they get calls about road closures, but I don't believe most have a way to present that information to everyone.