Where words and phrases used in the Traffic Code are defined by State law, such definitions apply to their use in said Traffic Code and are adopted by reference. Those definitions so adopted that need further definition or are reiterated, and other words and phrases used herein, have the following meanings:
(Code of Iowa, Sec. 321.1)
1. "Business District" means the territory contiguous to and including the following designated streets:
A. First Street from Main Street to Chestnut Street.
B. Cedar Street from Grand Street to Second Street.
C. Sycamore Street from Grand Street to Second Street.
2. "Park" or "parking" means the standing of a vehicle, whether occupied or not, otherwise than temporarily for the purpose of and while actually engaged in loading or unloading merchandise or passengers.
3. "Peace officer" means every officer authorized to direct or regulate traffic or to make arrests for violations of traffic regulations.
4. "Residence district" means the territory contiguous to and including a highway not comprising a business, suburban or school district, where 40 percent or more of the frontage on such a highway for a distance of 300 feet or more is occupied by dwellings or by dwellings and buildings in use for business.
5. "School district" means the territory contiguous to and including a highway for a distance of 200 feet in either direction from a schoolhouse.
6. "Stand" or "standing" means the halting of a vehicle, whether occupied or not, otherwise than for the purpose of and while actually engaged in receiving or discharging passengers.
7. "Stop" means when required, the complete cessation of movement.
8. "Stop" or "stopping" means when prohibited, any halting of a vehicle, even momentarily, whether occupied or not, except when necessary to avoid conflict with other traffic or in compliance with the directions of a peace officer or traffic control sign or signal.
9. "Suburban district" means all other parts of the City not included in the business, school, or residence districts.
10. "Traffic control device" means all signs, signals, markings, and devices not inconsistent with this chapter, lawfully placed or erected for the purpose of regulating, warning, or guiding traffic.
11. "Vehicle" means every device in, upon, or by which any person or property is or may be transported or drawn upon a public highway, street, or alley. "Vehicle" does not include:
A. Any device moved by human power.
B. Any device used exclusively upon stationary rails or tracks.
C. Any integral part of a truck tractor or road tractor which is mounted on the frame of the truck tractor or road tractor immediately behind the cab and which may be used to transport persons and property but which cannot be drawn upon the highway by the truck tractor or another motor vehicle.
D. Any steering axle, dolly, auxiliary axle or other integral part of another vehicle which in and of itself is incapable of commercially transporting any person or property but is used primarily to support another vehicle.