jis
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Viaggio is a brand name. It is not a single technical design. The low floor and bi-level Viaggios are a completely different technical thing, and have different potential issues as far as clearing buff strength and other requirements for getting certified in the US. Not saying they cannot be certified, but the process has to take place and that takes time.
Actually high level platforms and bi-level cars are two separate issues. Bi-level cars with doors only at the lower level, and for that matter even low floor single level cars are related to low level platforms for level boarding. Incidentally, today no low floor car in California has level boarding at most stations. Both single and bi-level cars exist that can operate with level boarding from high level platforms. Bi-level cars inherently have universal accessibility issues which may or may not be important.
BTW, isn't SMART HL Platform?
Actually high level platforms and bi-level cars are two separate issues. Bi-level cars with doors only at the lower level, and for that matter even low floor single level cars are related to low level platforms for level boarding. Incidentally, today no low floor car in California has level boarding at most stations. Both single and bi-level cars exist that can operate with level boarding from high level platforms. Bi-level cars inherently have universal accessibility issues which may or may not be important.
BTW, isn't SMART HL Platform?