When, as a result of a Traffic Engineering survey, the Traffic Engineer determines that the movement of vehicular traffic upon the roadway, intersection or location so surveyed could be controlled with greater safety to life and property or with greater efficiency in the use of the roadway, intersection or location, if the speed limit were increased or reduced, he or she shall specify the speed limit in terms of miles per hour and it shall become effective upon the placing of proper signs and markers giving notice thereof.
(Prior Code, § 16-205)