GB/T 20851.2-2007
AbolishedElectronic toll collection - Dedicated short range communication - Part 2: Data link layer
电子收费 专用短程通信 第2部分：数据链路层
Application Summary AI generated
This standard specifies the data link layer protocol for dedicated short-range communication (DSRC) in electronic toll collection (ETC) systems. It defines frame structures, error control, and media access control methods to ensure reliable data exchange between roadside units (RSU) and on-board units (OBU) in highway and urban tolling environments. The standard is applied in China's ETC infrastructure to enable interoperable, high-speed vehicle identification and transaction processing at toll plazas.
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