(a) Except as provided in Section 21374, only those official traffic control devices that conform to the uniform standards and specifications promulgated by the Department of Transportation shall be placed upon a street or highway.

(b) Any traffic signal controller that is newly installed or upgraded by the Department of Transportation shall be of a standard traffic signal communication protocol capable of two-way communications. A local authority may follow this requirement.

Terms Used In California Vehicle Code 21401

  • 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
  • Street: 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 590
  • 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

(c) In recognition of the state and local interests served by the action made optional for a local authority in subdivision (b), the Legislature encourages local agencies to continue taking the action formerly mandated by this section. However nothing in this subdivision may be construed to impose any liability on a local agency that does not continue to take the formerly mandated action.

(Amended by Stats. 2004, Ch. 889, Sec. 6. Effective September 29, 2004.)

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