AlbertHWagstaff
Senior Member
1, 2, 3, 4, etc. would be readable by most people who don't read the Latin or English alphabet.
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Well, strictly speaking if the lines were numbered using the Latin alphabet, we'd have Line I, Line II, Line III and Line IV.
The bus and streetcar map would be really impressive looking: "Transfer at Royal York to bus routes XV, LXXIII and LXXVI".