(a)
(1)Whenever a local authority determines upon the basis of an engineering and traffic survey that the prima facie speed limit established by subdivision (b) of Section 22352 is more than is reasonable or safe, the local authority may, by ordinance or resolution, determine and declare a prima facie speed limit of 15 miles per hour if justified as the appropriate speed limit by that survey.
(2)An ordinance or resolution adopted under paragraph (1) shall not be effective until appropriate signs giving notice of the speed limit are erected upon the highway and, in the case of a state highway, until the ordinance is approved by the Department of Transportation
and the appropriate signs are erected upon the highway.
(b)
(1)Notwithstanding subdivision (a) or any other provision of la
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(a)
(1)
Whenever a local authority determines upon the basis of an engineering and traffic survey that the prima facie speed limit established by subdivision (b) of Section 22352 is more than is reasonable or safe, the local authority may, by ordinance or resolution, determine and declare a prima facie speed limit of 15 miles per hour if justified as the appropriate speed limit by that survey.
(2)
An ordinance or resolution adopted under paragraph (1) shall not be effective until appropriate signs giving notice of the speed limit are erected upon the highway and, in the case of a state highway, until the ordinance is approved by the Department of Transportation
and the appropriate signs are erected upon the highway.
(b)
(1)
Notwithstanding subdivision (a) or any other provision of law, a local authority may, by ordinance or resolution, determine and declare prima facie speed limits as follows:
(A)
A 15 miles per hour prima facie limit in a residence district, on a highway with a posted speed limit of 30 miles per hour or slower, in a school zone.
(B)
A 25 miles per hour prima facie limit on a highway when approaching, at a distance of 500 to 1,000 feet from, a school zone.
(2)
The prima facie limit established under subparagraph (A) of paragraph (1) applies only to highways that meet all of the following
conditions:
(A)
A maximum of two traffic lanes.
(B)
A maximum posted 30 miles per hour prima facie speed limit immediately prior to and after the school zone.
(3)
The prima facie limits established under paragraph (1) apply to all lanes of an affected highway, in both directions of travel.
(4)
When determining the need to lower the prima facie speed limit, the local authority shall take the provisions of Section 627 into consideration.
(5)
(A)
An ordinance or resolution adopted under paragraph (1) shall not be effective until appropriate signs giving notice of the speed limit are
erected upon the highway and, in the case of a state highway, until the ordinance is approved by the Department of Transportation and the appropriate signs are erected upon the highway.
(B)
For purposes of subparagraph (A) of paragraph (1), school warning signs indicating a speed limit of 15 miles per hour may be placed at a distance up to 500 feet away from school grounds.
(C)
For purposes of subparagraph (B) of paragraph (1), school warning signs indicating a speed limit of 25 miles per hour may be placed at any distance between 500 and 1,000 feet away from the school grounds.
(D)
A local authority shall reimburse the Department of Transportation for all costs incurred by the department under this subdivision.
(c)
For purposes of this section, “school zone” has the same meaning as defined in Section 22352.