Disney Guy wrote:The S-70 has no entrance steps (and no wheelchair lifts) and a floor height a little over a foot (or about twice the height of a typical sidewalk curb) above railhead. It would be a "big step up" from street level.
(By the way, many pre-1930 streetcars had their first step about that same little-over-a-foot distance above railhead.)
Excellent point. San Diego would have to do what DART did to use a mix of high and low floor trains on all their lines. (1) Add new articulated section with low floors to existing trains, and (2) raise the height of existing platforms to match. Additionally, DART's low floor height is 18 inches above top of rail, the usual world standard is 14 inches, because that matches the bottom step of all their high floor train sections, thereby avoiding an awkward last or first step likely to cause trips or falls.
The other solution is do what Santa Clara transit did. (1) Sell all their old trains early and buy brand new S-70 low floor replacement trains, and (2) raise all the old platforms to low floor height. Luckily, the found UTA willing to buy all their high floor equipment used. I'm not so sure San Diego transit will be so lucky.