(This is -- thematically at least -- a repetition of some of my early posting on somewhat the same subject area.)
I grew up in Jamaica Plain at the five-way intersection of South Huntington, Centre, Moraine, and Boylston. My experience was early enough that trolleys were still running to Dudley. Transportation to and from the Agassiz, then Latin, and even later Northeastern was either by foot or by trolley. Trackless trolleys weren't looked on as even honorary trolleys. The modifier diminished them from occupying the same status as center-entries, Type 5s, MTA PCCs, or even Dallas cars.
As much as steel wheels on steel rail and contact shoes on contact wire are part and parcel of my earlier life, I wish neither the reestablishment of trolley service beyond Heath Street nor the imposition of trackless trolley service beyond Heath Street. Why? Because re-establishing and maintaining either of those modes would turn Centre from South Huntington southward into another Big Dig. Long-buried rail would have to be exhumed, leveled, repaired and/or replaced. Long-dormant subterranean electrical distribution would have to be rehabilitated and the contacts wires -- 1 or 2 for each direction -- reinstalled. Additional electricians would need to be hired, and additional equipment and material would need to be secured. Such additional costs on top of the Big Dig potential is good reason for maintaining bus service. Where there is island running, there will be construction/maintenance inconvenience at intersections, but where there is street running, construction/maintenance inconvenience is longitudinal, not briefly transverse.
Any municipal or regional transit system is subject to politics. If management in Boston, Philadelphia or any other city chooses to run contrary to political pressures -- indeed if that management cannot anticipate and accommodate those political pressures -- that management will be elsewhere quickly. Under the MassDOT reorganization, the T is establishing its presence -- physical and political -- in the Connecticut River Valley and the Berkshires, areas that were earlier disinterested and even hostile to the MBTA, especially at budget time.
Assuming there is no reversal of fortune after the Baker inauguration, the T's second half century looks auspicious.
"A gray crossover is definitely not company transportation."