Whenever the Department of Transportation or local authority determines upon the basis of engineering studies and a traffic survey that the speed of 55 miles per hour is more than is reasonable or safe for vehicles mentioned in subdivision (a) of Section 22406, which have a manufacturer’s gross vehicle weight rating of 10,000 pounds or more, in descending a grade upon any portion of a highway, the department or local authority, with respect to highways under their respective jurisdiction, may determine and declare a speed limit of 50, 45, 40, 35, 30, 25, or 20 miles per hour, whichever is found most appropriate to facilitate the orderly movement of traffic and is reasonable and safe, which declared speed limit shall be effective for such vehicles when appropriate signs giving notice thereof are erected upon the highway.

(Amended by Stats. 1973, Ch. 82, Sec. 1.)

Terms Used In California Vehicle Code 22407

  • Department: means the Department of Motor Vehicles except, when used in Chapter 2 (commencing with Section 2100) of Division 2 and in Divisions 11 (commencing with Section 21000), 12 (commencing with Section 24000), 13 (commencing with Section 29000), 14 (commencing with Section 31600), 14. See California Vehicle Code 290
  • Highway: is a way or place of whatever nature, publicly maintained and open to the use of the public for purposes of vehicular travel. See California Vehicle Code 360
  • Jurisdiction: (1) The legal authority of a court to hear and decide a case. Concurrent jurisdiction exists when two courts have simultaneous responsibility for the same case. (2) The geographic area over which the court has authority to decide cases.
  • traffic: includes pedestrians, ridden animals, vehicles, street cars, and other conveyances, either singly or together, while using any highway for purposes of travel. See California Vehicle Code 620
  • vehicle: is a device by which any person or property may be propelled, moved, or drawn upon a highway, excepting a device moved exclusively by human power or used exclusively upon stationary rails or tracks. See California Vehicle Code 670
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