Most right of way systems specify that the smaller more nimble participant is required to yield in conflicting right of way scenarios. Pedestrians yield to bikes, bikes yield to cars, cars yield to trains. On the water too, a swimmer yields to a row boat, which yields to a jet ski which yields to a motor boat which yields to a yacht which yields to a cargo ship which yields to a carrier. It's more a recognition of the laws of physics than it is a exclusionary practice.