GoDCers, Where Is This?

Any thoughts on where this photo was taken?

Washington, D.C., circa 1922. "NO CAPTION (Children, police motorcycles with sidecars, and streetcar in street)." From a series of photos whose subject seems to be traffic safety. Harris & Ewing Collection glass negative.
Washington, D.C., circa 1922. “NO CAPTION (Children, police motorcycles with sidecars, and streetcar in street).” From a series of photos whose subject seems to be traffic safety. Harris & Ewing Collection glass negative.