(a)
No ordinance of a city relating to the stopping, standing or parking of a vehicle shall become effective as to a county highway established pursuant to this article within the city without prior submission to and approval by the board of supervisors. No city shall erect or maintain any stop sign, semaphore, or other traffic control signaling device in a manner that requires the traffic on any county highway established pursuant to this article within the city to stop before entering or crossing any intersecting street or any railroad grade crossing, without the permission of the board of supervisors.
(b)
An ordinance adopted on or after January 1, 2005, by a county under Section 21960 of the Vehicle Code to prohibit or restrict pedestrian use of a portion of a county freeway or expressway contained within the limits of a city shall not become operative until approved by the city.