Etrak

Traffic information for most large cities in the USA.
http://www.etaktraffic.com/

Rand McNally Online: Road Construction - USA

If construction-zone orange makes you see red, visit this award-winning database of major road construction projects.
http://www.randmcnally.com/construction/index.htm

National Traffic and Road Closure Information

Links to the respective pages in all states' department of transportation websites.
http://www.fhwa.dot.gov/trafficinfo/

National Scenic Byways Online

Provides travelers with current, detailed information about scenic byways throughout the United States. FHWA-designated All-American Roads and National Scenic Byways, as well as many other state and federally-designated byways.
http://www.byways.org

The I-95 Exit Information Guide OnLine

Detailed listing (food, gas, lodging, camping, etc.) for America's most heavily traveled highway, I-95. Plus RoadNews, Forums, Instant Reservations, and contests.
http://www.usastar.com/i95/homepage.htm

United States Road Conditions

A fast look at updated road conditions, traffic reports and live look at highway weather conditions.
http://usroadconditions.com

Citibay Traffic Report

Links to traffic information and traffic cams to the US major cities.
http://www.citibay.com/citibay/traffic/

GeoTraffic.com

Traffic reports and conditions for the nation with real time traffic reports.
http://traffic.geoportals.com/

Bear Trap Guide

Detailed list of highway patrol bear traps in the United States by Interstate number.
http://www.beartraps.com/