AccuTraffic real-time traffic updates for several American cities.
Drivers.com an information service specializing in traffic safety, driver behavior, training and education.
Highways.tv offers national transportation directory featuring road cameras, maps, road conditions, links.
National Traffic and Road Closure Information directory of informational links published by the Federal Highway Administration.
Rand McNally: Road Construction searchable database providing precise highway locations, type of construction, and start and end dates.
Traffic.com provides updates and delivers data to media, telematics, and transportation industries.
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