GB/T 20851.4-2007
AbolishedElectronic toll collection - Dedicated short range communication - Part 4: Equipment application
电子收费 专用短程通信 第4部分：设备应用
Application Summary AI generated
This standard specifies the application layer protocol and data exchange requirements for roadside and onboard equipment used in dedicated short-range communication (DSRC) for electronic toll collection (ETC) systems. It is applied in China to ensure interoperability between different manufacturers' ETC devices on highways, bridges, and tunnels. The standard defines transaction procedures, message formats, and security mechanisms for vehicle-to-roadside communication during tolling operations.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.