Some motorists think roads were built for cars, and that people on bicycles are interlopers. Historically and legally, this is not the case: most global jurisdictions enshrine the right of bicyclists to enjoy the public highway – that is, to enjoy it in law if not always in reality. International traffic treaties also guarantee this basic right. Some bicycle advocates like to remind motorists that they and their motor vehicles are allowed on the road only under license while cyclists are allowed on the road by right.
As evidenced by the 2009 Manual on Uniform Traffic Control Devices, U.S. bicyclists “may use [the] full lane,” but this doesn’t stop some motorists shouting that cyclists do not belong on roads.