BO-1 MEC 507 heads Eastbound past ABS P5.6/5.7 in Chelsea, MA with 5 cars for Rousselot in tow. Once cab signals are implemented between Wonderland and Everett Jct, these signals will be removed as well as the ABS P3.7/3.8 signals located near Second St. in Everett. Taken from "Forbes" on the MBTA's Eastern Route Mainline on July 6, 2023.
