Mass ____ (subways, e.g.) (7)
I believe the answer is:
transit
(Other definitions for transit that I've seen before include "The carrying of people etc" , "Change" , "Crossing - passage" , "To pass through/across" , "Journey across" .)
I believe the answer is:
transit
(Other definitions for transit that I've seen before include "The carrying of people etc" , "Change" , "Crossing - passage" , "To pass through/across" , "Journey across" .)