Left Shoulder

An operator may drive on an improved shoulder to the left of the main traveled portion of a divided or limited-access or controlled-access highway if that operation may be done safely, but only:

• to slow or stop when the vehicle is disabled and
  traffic or other circumstances prohibit the safe movement of the vehicle to the shoulder to the right of the main traveled portion of the roadway;
  
• as permitted or required by an official
  traffic-control device; or
  
• to avoid a collision. (except for Police or a bicycle)