Light rail - Resembles modern streetcar with up to four cars powered by overhead electric wires. Portland, Ore.; Charlotte, N.C.; and Denver; are among widely known U.S. systems.
Commuter rail - Trains with heavy rail cars, often with two levels and powered by diesel locomotives. Tri-Rail, which links Miami, Fort Lauderdale and West Palm Beach, is an example. Chicago and Toronto are among successful commuter rail lines.
Regular train - Amtrak operates standard coach and sleeper cars on the daily Silver Star between New York and Miami through Tampa.
High Speed Rail - The Acela, Amtrak's only U.S. high-speed train, links Boston and Washington. Proposed Tampa-Orlando rail would be electric powered.
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