Okla. Stat. tit. 11, § 11-22-117: Traffic ordinances and regulations — Designation of

school zone speed limits.

A. The municipal governing body may establish ordinances and

regulations governing the operation of motor vehicles and traffic

upon the roads and streets within the municipality in the manner

provided by, and not inconsistent with, state law. An ordinance or

regulation shall be consistent with state law if it is reasonably

related to traffic safety or control or flow of traffic and does not

contradict a specific provision of state law. The governing body

may also regulate and prevent racing and fast driving, and all

games, practices or amusements likely to result in damage to any

person or property, in the streets, highways, alleys, bridges,

sidewalks or other places in the municipality, and riding or driving

over or upon the sidewalks of the municipality.

B. Any municipal governing body which establishes ordinances

and regulations governing school zone speed limits, shall place

school zone signs designating the beginning and end of the zone on

the side or in the center of the roadway. Such end zone signing

shall be as follows:

1. On roadways of two driving lanes, only the end zone signing

may be on either side of the roadway or in the center of the

roadway; and

2. On roadways in excess of two driving lanes, the end zone

signing shall be on the right side of the roadway or in the center

of the roadway if said roadway is divided by a median.