This site provides information on SuperShuttle locations and services.

Airport Shuttle (Washington Flyer)

This site provides information on transportation options endorsed by the Metropolitan Washington Airports Authority for service to and from Washington Dulles International Airport.

Distance Calculator

This page, part of a larger site on travel in Bali and Indonesia, uses data from the U.S. Census and a supplementary list of cities around the world to find the latitude and longitude of two places, and then calculates the distance between them. It also provides a map showing the two places.

SmarTraveler

This site is the online companion to the company of the same name and provides real time traffic information in 83 U.S. cities. Obtain route-specific, real-time traffic and transit information; updated weather conditions; turn-by-turn street directions; real-time flight arrival and departure times, and more.

U.S. Driving Directions & Maps

This site provides advanced mapping and driving directions throughout the U.S. It also offers other easy-to-search travel content databases, including Find a Business; Search by Phone Number; City Guides; and Find Email Address.

U.S. Traffic and Road Closures

This site delivers links to all the critical route navigation information you need. Sections comprise traffic conditions, construction and other transit related information, web sites of the State Departments of Transportation and regional information sources such as an I-95 Travelers Alert.

Subway maps

This trip tool from Amadeus provides maps of subways in various cities of the world.