The action of obsessing over a transit agency's fleet of vehicles, such as buses or subway cars. Most transit fanners tend to photograph or video every niche of a transit agency and knows way too much about the agency's fleet, schedules, routes, and a collection of best "fanning spots".

Transit fanners are not a hit with the agency's employees. Most notably bus drivers, heavy rail operators, track laborers, and especially the transit police.
Well shit, Daniel's gone transit fanning again. Can't he do something more productive?
by bus_simp January 18, 2023
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