U.S. Government Agencies-Transportation Sites:
1. Federal Highway Administration
2. Federal Motor Carrier Safety Administration
3. Federal Railroad Administration
4. National Highway Traffic Safety Administration
5. National Transportation Safety Board
6. Transportation Terms
7. U.S. Department of Transportation

Other Transportation Resources
1. Freightworld
2. Yahoo -- Business and Economy: Transportation

Publications:
1. Investors Business Daily
2. Logistics Management
3. Traffic World
4. Transport Topics
5. USA Today
6. Wall Street Journal

Road Conditions:
Accu Traffic

Current Gasoline and Diesel Fuel Prices:
EIA

Weather:
1. Earth Watch
2. The Weather Channel
3. Weather USA

Maps/Directions:
1. Mapquest
2. Maps On Us

Other Helpful Sites:
1. Manufacturing Marketplace
2. Thomas Regional Buying Guide
3. Travel Plans