A. A person shall not drive a vehicle on a highway at a speed greater than is reasonable and prudent under the circumstances, conditions and actual and potential hazards then existing. A person shall control the speed of a vehicle as necessary to avoid colliding with any object, person, vehicle or other conveyance on, entering or adjacent to the highway in compliance with legal requirements and the duty of all persons to exercise reasonable care for the protection of others.

Terms Used In This Law

  • drive: means to operate or be in actual physical control of a motor vehicle. See Arizona Laws 28-101
  • evidence: Information presented in testimony or in documents that is used to persuade the fact finder (judge or jury) to decide the case for one side or the other.
  • highway: means the entire width between the boundary lines of every way if a part of the way is open to the use of the public for purposes of vehicular travel. See Arizona Laws 28-101
  • implement of husbandry: means a vehicle designed primarily for agricultural purposes and used exclusively in the conduct of agricultural operations, including an implement or vehicle whether self-propelled or otherwise that meets both of the following conditions:

    (a) Is used solely for agricultural purposes including the preparation or harvesting of cotton, alfalfa, grains and other farm crops. See Arizona Laws 28-101

  • including: means not limited to and is not a term of exclusion. See Arizona Laws 1-215
  • intersection: means the area embraced within the prolongation or connection of the lateral curb lines, or if none, the lateral boundary lines of the roadways of two highways that join one another at, or approximately at, right angles, or the area within which vehicles traveling on different highways joining at any other angle may come in conflict. See Arizona Laws 28-601
  • person: includes a corporation, company, partnership, firm, association or society, as well as a natural person. See Arizona Laws 1-215
  • railroad: means a carrier of persons or property on cars operated on stationary rails. See Arizona Laws 28-601
  • roadway: means that portion of a highway that is improved, designed or ordinarily used for vehicular travel, exclusive of the berm or shoulder. See Arizona Laws 28-601
  • traffic: means pedestrians, ridden or herded animals, vehicles and other conveyances either singly or together while using a highway for purposes of travel. See Arizona Laws 28-601
  • vehicle: means a device in, on or by which a person or property is or may be transported or drawn on a public highway, excluding devices moved by human power or used exclusively on stationary rails or tracks. See Arizona Laws 28-101

B. Except as provided in subsections C and D of this section or except if a special hazard requires a lesser speed, any speed in excess of the following speeds is prima facie evidence that the speed is too great and therefore unreasonable:

1. Fifteen miles per hour approaching a school crossing.

2. Twenty-five miles per hour in a business or residential district.

3. Sixty-five miles per hour in other locations.

C. The speed limits prescribed in this section may be altered as authorized in sections 28-702 and 28-703.

D. The maximum speed provided in this section is reduced to the speed that is reasonable and prudent under the conditions and with regard to the actual and potential hazards then existing, including the following conditions:

1. Approaching and crossing an intersection or railroad crossing.

2. Approaching and going around a curve.

3. Approaching a hillcrest.

4. Traveling on a narrow or winding roadway.

5. A special hazard exists with respect to pedestrians or other traffic or by reason of weather or highway conditions.

E. A person shall not drive a motor vehicle at a speed that is less than the speed that is reasonable and prudent under existing conditions unless the speed that is reasonable and prudent exceeds the maximum safe operating speed of the lawfully operated implement of husbandry.