When truck routes have been designated in accordance with Chapter 61, any motor vehicle exceeding established weight limits shall comply with the following:
1. Use of Established Routes. Every such motor vehicle having no fixed terminal within the City or making no scheduled or definite stops within the City for the purpose of loading or unloading shall travel over or upon those streets within the City designated as truck routes and none other.
(Code of Iowa, Sec. 321.473)
2. Deliveries Off Truck Route. Any such motor vehicle, when loaded or empty, having a fixed terminal, making a scheduled or definite stop within the City for the purpose of loading or unloading shall proceed over or upon the designated routes to the nearest point of its scheduled or definite stop and shall proceed thereto, load or unload and return, by the most direct route to its point of departure from said designated route.
(Code of Iowa, Sec. 321.473)
3. Employer’s Responsibility. The owner, or any other person, employing or otherwise directing the driver of any vehicle shall not require or knowingly permit the operation of such vehicle upon a street in any manner contrary to this section.
(Code of Iowa, Sec. 321.473)