ETC carries out two-way communication with the roadside unit (RSU) to realize non-stop charging function.ETC与路侧单元（RSU）进行双向通信，实现不停车收费功能。
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ETC functionETC功能
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Bluetooth function: After the vehicle is started, the Bluetooth function of the ETC device is turned on for a period of time and can be connected to it through a mobile phone to achieve remote activation.蓝牙功能：车辆启动后ETC设备蓝牙功能打开一段时间，可通过手机与其连接，实现远程激活。 |
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Self-checking function: ETC has a system self-checking function. The vehicle will perform a self-check after starting. If the self-check is abnormal, there will be corresponding sound and light prompts.自检功能：ETC具有系统自检功能。车辆启动后会进行自检，自检异常时会有相应的声光提示。 |
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Transaction function: OBU supports open free flow fee transactions and closed entrance and exit transactions. After the transaction, non-repudiation vouchers are generated for back-end accounting forms such as deduction and settlement applications.交易功能：OBU支持开放式自由流收费交易、封闭式出入口交易。交易后产生具有不可抵赖性的用于后台记账形式的扣费和结算等应用的凭证。 |
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ETC buzzer statusETC蜂鸣器状态
System description (ETC)系统说明(ETC)
