A complete guide to North & South American metro rail and light rail systems,
                                                including subways, els, peoplemovers, subte networks:

Atlanta
Baltimore
Belo Horizonte
Boston
Brasília
Buenos Aires
Buffalo
Calgary
Caracas
Charlotte
Chicago
Cleveland
Dallas
Denver
Detroit
Edmonton
Guadalajara
Houston

cities with metro & light rail projects - planned or under construction:

Córdoba | Curitiba | Fortaleza | Goiânia | Honolulu | Mendoza | Ottawa | Panamá | Quito | Salvador | Tucson | Waterloo Region

heritage streetcar systems with regular daily service:

Little Rock | Memphis | New Orleans | Tampa |

NYC Subway Resources is the site you need for anything related to North America not included in UrbanRail.Net (incl. many good maps)

Alamys.org - Association of Latin American Metros and Subways

Allen Morrison - the specialist in Latin American metros and other electric city transport

Jon Bell's Transit Pages include links to many US mass transit systems

Jim Middleton's lightrail.com site

Linha Azul (Blue Line - 22 km, 21 stations) from Santa Cândida to CIC Sul. The line will be underground for 19 km, following the present bus corridor. Between Passeio Público and Praça Eufrásio Correia, the Metrô will run below Riachuelo and Barão do Rio Branco streets. Along Avenida Winston Churchill, some 500 m after Terminal do Pinheirinho up to the BR-476, the Metrô will be elevated. The rest up to Terminal da CIC-Sul will be at grade.
(Planning status 2009).

Check official website here!

12.4km north-south line (partly elevated, partly underground).

The first 8.4km segment to be built would run from Terminal do Cruzeiro do Sul (Vila Brasília/Aparecida de Goiânia) to Terminal Rodoviário (Bus station). Later it would continue in the middle strip of Av. Goiás Norte to Jardim Curitiba. Construction may start in 2003. (Official Site)