(10-17-2016, 12:03 PM)Spokes Wrote: Is that because green lights could cause the trains to get there early and thus get off the schedule?
Yes; exactly!
(10-17-2016, 12:34 PM)Markster Wrote: More like, aggressive signal priority would cause more impact to the perpendicular vehicular traffic than they want.
Imagine a busy intersection like Erb/Caroline, halting traffic for up to 1 minute in all directions every 3.25 minutes. That would be a bit of a disaster...