Statutes, codes, and regulations
California Code Of Regulations
Title 21 - Public WorksDivision 2 - Department of TransportationChapter 16 - Compatibility Specifications for Automatic Vehicle Identification Equipment
Article 4 - Reader Specifications
Section 1703.1 - General

Cal. Code Regs. tit. 21 § 1703.1

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Current through Register 2024 Notice Reg. No. 52, December 27, 2024
Section 1703.1 - General

The reader will transmit a RF trigger pulse to activate (turn-on) the transponders. After a time delay, the reader then will transmit an encoded signal, referred to as the polling message which, upon detection and decoding by the transponder, will provide initial information to the transponder including the type of transaction the reader wishes to conduct.

The reader will then transmit an unmodulated CW.RF signal for the transponder to modulate with a data message while backscattering to the reader. The reader may repeat the polling-to-backscattering sequence until it obtains an error free data message from the transponder. The reader will then transmit an encoded acknowledge message to the transponder providing status information and requesting that the transponder not respond to the same polling message again for a fixed time period.

Cal. Code Regs. Tit. 21, § 1703.1

1. Renumbering of former article 3 (sections 1704.1-1704.6) to article 4 (sections 1703.1-1703.6) and renumbering of former section 1704.1 to new section 1703.1 filed 11-28-2017; operative 1-1-2018 (Register 2017, No. 48).

Note: Authority cited: Section 27565, Streets and Highways Code. Reference: Sections 27564 and 27565, Streets and Highways Code.

1. Renumbering of former article 3 (sections 1704.1-1704.6) to article 4 (sections 1703.1-1703.6) and renumbering of former section 1704.1 to new section 1703.1 filed 11-28-2017; operative 1/1/2018 (Register 2017, No. 48).