Book excerpt: Contents: (1) Intro.; (2) What is High Speed Rail (HSR)?; (3) HSR Options; (4) Components of a HSR System: Conventional HSR; Track; Signal and Commun. Networks; Magnetic Levitation; (5) HSR In: Japan; France; Germany; Spain; China; (6) Background of Intercity Passenger Rail in the U.S.; (7) Previous Efforts in the U.S.; (8) Recent Congress. Initiatives to Promote HSR; (9) Potential Benefits: Alleviating Highway and Airport Congestion; Alleviating Pollution and Reducing Energy Consumption by the Transport. Sector; Promoting Econ. Develop.; Improving Transport. Safety; Providing a Choice of Modes; Making the Transport. System More Reliable; (10) Infrastructure and Operating Costs; (11) Ridership Potential; (12) Funding Consider.