(12-05-2023, 08:33 PM)taylortbb Wrote:(12-05-2023, 06:50 PM)Bytor Wrote: For trams every 7.5 minutes, you could use 13 trams on a 97.5-minute schedule with breaks of 5 and 5.5 minutes, or 14 trams on a 105-minute schedule with breaks of 12 and 6 minutes.
I remember the region referring to our original purchase of 14 vehicles as being 2 maintenance spares + 12 in-service vehicles, with 8 minute headways. So your math tracks with the reference to 1 additional vehicle being adequate for 7 minute service. I assume they meant 13 in-service vehicles, with 7.5 minute headways.
Whether 2 maintenance spares is actually enough is of course another question.
I just double-checked and it seems the region and GrandLinq had initially chosen 13 trams for 7.5 minute service.
https://web.archive.org/web/202211221916...df#page=22
They also anticipated 16 trams for 3 spares at that time.