has three types of stations. They are low platform, high platform, and underground. High platform and underground stations are wheelchair accessible as the train doors are level with the platform. Low platform stations are not wheelchair accessible as they require passengers to climb stairs to board the light rail vehicle. References External links Red Line schedule Light rail in Pennsylvania Electric railways in Pennsylvania Port Authority of Allegheny County Underground rapid transit in the United States 5 ft 2½ in gauge railways in the United States Streetcars in Pennsylvania Passenger rail transportation in Pennsylvania Transportation in Pittsburgh 650 V DC railway electrification