Hong Kong has one of the world's most impressive public transportation networks. Over 90% of the area's 11 million daily trips are made through the use of rail, buses, ferries, cable cars, and long distance outdoor escalators.

Learn how bicycling is improving urban cores in cities around the world. As a environmentally friendly method of transportation, planners and officials are promoting biking for their urban areas.

Learn about the world's busiest ports. The geography of transportation and shipping is based on ports, which are break-of-bulk points where cargo is moved from sea to land, and vice-versa.

An overview of transportation geography, the field of geography which studies various forms of transportation and their movement across the earth, from the expert About.com Geography GuideSite.

A basic overview of the fastest trains in the world, from your About.com Guide to Geography.

A comprehensive listing of the world's busiest airports, from your About.com Guide to Geography. The list of the top thirty busiest airports in the world.

A listing and overview of the world's busiest subways. Learn about the world's busiest subway systems in major cities around the world.

The Erie Canal was the nation's first major transportation system. It allowed goods to be shipped to and from New York City and the Upper Midwest, starting the migration that created the USA as we know it today.

Guest columnist Brett J. Lucas explores the geographic relationship of passenger rail, from short-haul to long-haul passenger train routes.

Geography of Route 66: Read this article to learn about Route 66. Learn about Route 66's history, names and status today from Geography at About.com.

High speed trains are an effective and fast transportation system for medium distance commute travel between metropolitan areas or within a region such as Europe. Learn all about high speed trains from this expert About.com Geography GuideSite article.

A brief history and overview of the United States interstate highway system, from your About.com Guide to Geography.

Longest Bridges in the World: Refer to this list to learn about the ten longest bridges in the world.

Discover the history and route of the world's longest railway, the Trans-Siberian Railway, which extends from Moscow to the Pacific Ocean in Russia.