Why are bicycles prohibited from using the Interstate shoulders?
Each State establishes the operating rules that determine which vehicles are allowed on the Interstate highways under their jurisdiction. Most States do not allow bicyclists on the Interstate shoulders, but bicycle use is permitted in some States, particularly in the west where there is less traffic and where good alternative routes may not exist for bicycles. Determining if bicycle access should be permitted is done only after careful study and consideration of how bicyclists and motor vehicle traffic can safely negotiate on- and off-ramps. The safety of all roadway users must be considered. In addition, some Interstate highways, mainly in urban areas, have been built with bicycle paths.
