11-14-2018, 06:31 PM
(11-14-2018, 11:19 AM)tomh009 Wrote: Most of the difference is explained by their assumptions on asset life: 41 years for LRT, 48 years for BRT and 61 years for SkyTrain. I don't know where the numbers came from and what they mean. I can't see running today's SkyTrain rolling stock in 2080, even with refurbishment -- that would be like running Kennedy-era trains today. And I would really expect the SkyTrain station infrastructure to cost significantly more to maintain.
They just retired the MR-63 metro trains in Montreal, which were in service from 1966. That is pretty much 60 years. Of course, metro trains run underground (in a high humidity environment), not in the sky. But, there's no salt on the SkyTrain. So who knows.