(A) Outside a business or residence district, no person shall stop, park, or leave standing any vehicle, whether attended or unattended, upon the roadway when it is practicable to stop, park, or so leave the vehicle off the roadway, but in every event an unobstructed width of the highway opposite a standing vehicle shall be left for the free passage of other vehicles, and a clear view of the stopped vehicle shall be available from a distance of 200 feet in each direction upon the highway.
(B) The department, with respect to highways under its jurisdiction or for the maintenance of which it is responsible, may place signs prohibiting or restricting the stopping, standing, or parking of vehicles on any highway where in its opinion stopping, standing, or parking is dangerous to those using the highway, or where stopping, standing, or parking vehicles would unduly interfere with the free movement of traffic thereon. Any regulations adopted by the department regarding the stopping, standing, or parking of vehicles upon any specific street, streets, or highways become effective at the time of the erection of appropriate signs indicating the regulations. Any signs may be erected either by the department or by a local authority with the approval of the department.
(ILCS Ch. 625, Act 5, § 11-1301) Penalty, see § 70.999