The thoroughfares shown in the thoroughfare plan are classified as to width and type in accordance with their functions as parts of the major street and highway system, and are designated as arterial, feeder and residential streets as shown in the Thoroughfare Plan. These streets are to be provided with the right-of-way widths shown in the Thoroughfare Plan, and are to be improved as required by Chapter 157 which provides for the control of the subdivision of land.
('71 Code, § 130.04)