photo by Dan Macy, via Flickr

Here’s a nice slice-of-transit-life photo from…well, go ahead and guess the city. There are abundant clues in the photo. If those don’t help, here’s another one: Police Detective McNulty once trolled these streets. The answer is after the jump.

To submit a photo or photos of something transportation-related, post them to Metro’s Flickr group or email them to sourcemetro@gmail.com. The photos we’ve featured can be seen in these galleries on Flickr. Or click on the ‘art of transit’ in the categories box at right.

Welcome to Baltimore, Maryland, the setting for one of the best TV series ever made: “The Wire.”