One of the most amazing developments over the past decade has been how much "real time" data is now available online. One of my favorite types of travel information are traffic cameras and road cameras which are both practical from the point of view of planning a trip and getting to actually see the road conditions as well as from the point of view of just being .... cool.
We talked earlier about www.TripCheck.com , Oregon's excellent Department of Transportation Website that features close to real time imagery from dozens of cams all over Oregon.
Another good source for road cam imagery is the California CALTRANS website: http://video.dot.ca.gov/ this actually features a lot of video which won't work very well unless you have good connectivity, but I think represents a look at the future of how we absorb and report complex travel information. What better way to know the road conditions than to ... see them?