Monarch Butterfly
Superstar
Should be remembered that New York City used to be run by 3 different companies, now divisions. IRT (Interborough Rapid Transit) was the first subway line, while BMT (Brooklyn-Manhattan Transit) and IND (Independent Subway System) were later additions. Today, the IRT lines are primarily known as the A Division, and the BMT and IND lines are combined as the B Division. IRT lines are generally narrower and use smaller train cars than the BMT and IND lines, which are combined into the B Division.Yeah while I can somewhat understand grouping different lines together by color when they essentially branch off each other, I never understood their logic of assigning letter names that aren't grouped together (like why ACE, BDFM, etc, instead of ABC, DEFG, etc??).
Spot on.
Maybe for Toronto Lines 1, 2, and 4, being the original subway lines, they should be considered their own division for the TTC. Line 5 and Line 6 trains cannot run on the original lines, so should be their own different division. The Ontario Line 3 trains cannot run on any other line (so far this century), so should be their own division. Maybe the numbers, letters, and/or symbol should reflect the division they are in.