The city council shall, by resolution, establish through streets as the need for such thoroughfares arises. Any resolution so passed under the authority of this chapter, and upon the erection of the necessary traffic control device or official sign or marking, shall serve as a supplement to this title and having the same force of law. (1985 Code ch. 20 § 4-1)
Upon those streets and parts of streets and in those alleys and parts of alleys so designated as one-way streets and alleys, vehicular traffic shall move only in the indicated direction when signs indicating the direction of the traffic are erected and maintained at every intersection where movement in the opposite direction is prohibited. (1985 Code ch. 20 § 9-1)