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77 Ways to Design the Letter 'M'

Mass transit agencies around the world face the same conundrum: How to make what amounts to four straight lines distinctive.
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Mark Byrnes / CityLab

The universal symbol for a city’s Metro system is a big “M.” If you see one, wherever you are, you know what to do. It’s like the world got together and agreed on a Bat Signal for mass transportation.

But transit agencies also go to some great lengths to render the letter in a way that’s uniquely theirs. With the help of the Metrobits blog we’ve identified at least 77 different M logo designs that are currently (or were recently) in use—gathered here in no special order (and listed in full at the bottom of this post). Considering that an M consists of a mere four straight lines, the group is a pretty impressive feast of diversity.