If you ride Muni Metro, you should notice that it is a system that has high platform stations (all underground stops and stops along the T Line) and low platform stations (street level stops west of downtown). The steps change when trains entering and exiting the subway. The dual platform height has been the standard since the Market Street subway was open in around 1980, when old streetcars that ran on the surface of Market Street was rerouted to use the subway. At that time, engineers wanted level boarding in downtown but low floor vehicle was not available. Vehicles with movable steps allows high platforms in downtown and street level boarding in the west side.
For more than 35 years, Muni Metro has had reliability issues. One of the factors contributing to poor reliability is the use of movable steps. Some advocated that Muni should change to low floor vehicles and convert high platforms to low levels. However, Muni is building more high platforms for the Central Subway extension as well as purchasing a 3rd generation of high floor vehicles with movable steps. This time the manufacturer claims that their doors would be more reliable. Let’s see what happens.
For many agencies that built light rail in the 1980s, they also had challenges in meeting accessibility and level boarding. Their first generation vehicles were high floor, but use low level platforms throughout the system for a better pedestrian accessibility and appearance. Many of them, including VTA, chose the path of low floor vehicles.
As Caltrain is pursuing electrification, Caltrain is considering various options for floor heights and door configurations for new electric vehicles. It is doing so because some advocates have expressed desire for level boarding as well as common platform height with high speed rail. It is a complex decision. There are no simple choices. A wrong decision would a ripple affect on train operation elsewhere and impacts to other cities. Read the rest of this page »