Road Weather

Real time road condition and travel weather information collected from state DOT RWIS (Road Weather Information System) sites from the United States and Canada.
http://www.roadweather.com

AccuTraffic

Road travel conditions for the continental United States.
http://www.accutraffic.com/www/accutraffic/traffic.html

USA Today Weather - Interstate Highway Conditions

Click on the number of an interstate highway to link to weather forecasts for cities along the highway.
http://www.usatoday.com/weather/wilist.htm

Travel Forecast

Offers customized reports for areas across the United States as well as road conditions, contact numbers, and maps.
http://www.travelforecast.com/

Intellicast - Travel Conditions

Forecast information organized by city, information on conditions of major interstates, and United States travel outlook.
http://www.intellicast.com/Travel/

My Travel Weather

Weather conditions, weather forecasts, weather radar, uv index and other information for travel, for the USA, Canada and internationally.
http://www.mytravelweather.com

Road Condition Reports

Get road conditions for across the U.S. by selecting your state.
http://www.beaverbear.com/hwycond.html

Travel Cities Weather

Offers a collection of weather radar and precipitation reports for major cities in the United States.
http://cirrus.sprl.umich.edu/wxnet/wsi.html

US Road Conditions

where to find United States road conditions updates for all 50 states with live traffic cams, US highway weather maps, and local road information.
http://www.usroadconditions.com/

Journeymart Weather

5-day weather forecast for world cities. Features world weather, minimum and maximum temperatures, rainfall, sunrise and sunset times, visibility, humidity and updates.
http://www.journeymart.com/tools/weather.asp

Travel Weather

US weather forecasts, road conditions, mountain snow and pass reports, rain and temperatures.
http://weather.org/travel.htm