§ 1130. Divided and controlled-access highways. 1. Whenever any
highway has been divided into two or more roadways by leaving an
intervening space or by a physical barrier or clearly indicated dividing
section so constructed as to impede vehicular traffic, every vehicle
shall be driven only upon the right-hand roadway unless directed or
permitted to use another roadway by official traffic-control devices or
police officers. No vehicle shall be driven over, across, or within any
such dividing space, barrier, or section, except through an opening in
such physical barrier or dividing section or space or at a crossover or
intersection, as established, unless specifically authorized by public
authority.

2. No person shall drive a motor vehicle or motorcycle onto or from
any controlled-access highway except at the established entrances and
exits thereof unless directed or permitted to use another entrance or
exit by official traffic-control devices or police officers.