San Diego BiLevel order to ‘make the decision to try transit an easy one’
https://www.railwaygazette.com/traction-and-rolling-stock/san-diego-bilevel-order-to-make-the-decision-to-try-transit-an-easy-one/56981.article
United States seems to be interested in double decker trains for suburban service. I think it's better to adopt this type of rolling stocks to ensure capacity by making use of wider tolerance of train's cross section in the US.
