In the absence of special pavement markings delineating lanes for walkers, runners, cyclists, rollerbladers/skaters, people with children (and strollers), and others, we had to be responsible for our footprints. The burden of regulating our interactions and avoiding altercations was on us; NYPD was only keeping the current conflict-free where it met automobiles at transverse streets. And so it seems when we travel at more-or-less the same speed, and the journey is itself the destination, we somehow figure out how to use each other as signposts. Now if we could just figure this out on a workday, in all five boroughs…

More reader-submitted photos after the jump, and more to come tomorrow…

Top photo of Park Avenue north of Grand Central: Philly Bike Coalition/Flickr
Bottom two photos: Jeff Prant

Taking a breather by the south facade of Grand Central. Photo: BicyclesOnly/Flickr

Free bike rentals on Lafayette. Photo: Philly Bike Coalition/Flickr

Puppy on board. Photo: cafrizell/Flickr

Thanks for adding your pics to Streetsblog’s Flickr pool — there’s more on the way!