Snow is not just fun or a chore to shovel, but also a planning tool in the way it visually reveals the paths people take as they walk, bike, or drive. Jeff Miller captured this fascinating photograph of how bicyclists’ many paths converge on a few points as they pass through the bollards on Pennsylvania Avenue near the White House.

Photo by Jeff Miller on Twitter.

David Alpert is Founder and President of Greater Greater Washington and Executive Director of DC Sustainable Transportation (DCST). He worked as a Product Manager for Google for six years and has lived in the Boston, San Francisco, and New York metro areas in addition to Washington, DC. He lives with his wife and two children in Dupont Circle. Unless otherwise noted, opinions in his GGWash posts are his and not the official views of GGWash or DCST.