road rail air waterways

Automobile

is the most popular type of transportation in the United States for shorter distances.

Interstate Highway System (47,714 mi)

Worst traffic:

• Seattle, WA

• San Francisco, CA

• Denver, CO

• Dallas, Austin, Houston, TX

• Atlanta, GA

• Washington D.C.

• Boston, MA

• St. Louis, MO

Speed Limits

Intercity Bus

is the least expensive way to travel long distances in the US.

Amtrak

is a 21,000­mile system of railroads serving more than 500 stations across the country.

Amtrak System Map

Air Transportation

is the preferred method of travel for trips over 300 miles.

Statistics

•There are about 15,000 public and private airports.

•Hartsfield­Jackson Atlanta International Airport is the busiest airport in the world.

•From 1970 to 1999, passenger traffic on certified air carriers increased 373%.

•The major international carriers are Delta Air Lines,

American Airlines, United Airlines and US Airways.

Water Transportation

is largely used for freight.