No person, unless otherwise directed by a police officer, shall:
(a) As a pedestrian, occupy any space within the limits of the right-of-way of a freeway, except: in a rest area; on a facility that is separated from the roadway and shoulders of the freeway and is designed and appropriately marked for pedestrian use; in the performance of public works or official duties; as a result of an emergency caused by an accident or breakdown of a motor vehicle; or to obtain assistance;
(b) Occupy any space within the limits of the right of way of a freeway, with: an animal-drawn vehicle; a ridden or led animal; herded animals; a pushcart; a bicycle, except on a facility that is separated from the roadway and shoulders of the freeway and is designed and appropriately marked for bicycle use; a bicycle with motor attached; a motor driven cycle with a motor which produces not to exceed five brake horsepower; an agricultural tractor; farm machinery; except in the performance of public works or official duties.