01-27-2016, 11:54 AM
Does anyone know if GRT has information somewhere about its usage of transit signal priority (TSP)? I have read about the TSP installed as part of the Ion aBRT, and I remember reading that the King corridor had something like twenty TSP devices installed around the time that the iXpress was launched. My understanding is that these are used only when buses are running late- but I don’t really have any idea what that means.
There must be rules somewhere- what constitutes ‘late’ for a bus’ TSP system to be activated, when a red light is truncated or a green extended (or whatever else the system does). I’ve never seen them. Does anyone know if there’s a document somewhere that lays them out?
I’m curious why (especially with aBRT in Cambridge) we are not using this technology (for which we have already paid) to make transit service faster. I’m really curious to what extent it’s used at all- if it’s only when buses are running egregiously late, or if it’s a commonplace thing to promote schedule adherence.
There must be rules somewhere- what constitutes ‘late’ for a bus’ TSP system to be activated, when a red light is truncated or a green extended (or whatever else the system does). I’ve never seen them. Does anyone know if there’s a document somewhere that lays them out?
I’m curious why (especially with aBRT in Cambridge) we are not using this technology (for which we have already paid) to make transit service faster. I’m really curious to what extent it’s used at all- if it’s only when buses are running egregiously late, or if it’s a commonplace thing to promote schedule adherence.