Standard No.:	GB/T 38444-2019
Chinese Name:	不停车收费系统 车载电子单元
English Name:	Electronic toll collection—On board unit
Professional Classification:	T36 Electronic and electrical equipment
ICS Classification:	43.040.10 Electrical and electronic equipment
Issued by:
Issued on:	2019-12-31
Implemented on:	2020-07-01
Status:	VALID
Language:	English
File Format:	PDF
Word Count:	12000 words
Price(USD):	(USD)
Delivery:	via email in 1-3 business day

1 Scope

This standard specifies the technical requirements, test methods and inspection rules of electronic toll collection on board unit.

It is applicable to the electronic toll collection on board unit powered directly by the vehicle.

It may serve as a reference for other on board electronic payment units.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

GB/T 1865-2009 Paints and varnishes - Artificial weathering and exposure to artificial radiation - Exposure to filtered xenon-arc radiation
GB/T 2828.1 Sampling procedures for inspection by attributes - Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
GB/T 18655-2018 Vehicles, boats and internal combustion engines - Radio disturbance characteristics - Limits and methods of measurement for the protection of on-board receivers
GB/T 19951-2019 Road vehicles - Disturbances test methods for electrical/electronic component from electrostatic discharge
GB/T 20851.1 Electronic toll collection - Dedicated short range communication - Part 1: Physical layer
GB/T 20851.2 Electronic toll collection - Dedicated short range communication - Part 2: Data link layer
GB/T 21437.2-2008 Road vehicles - Electrical disturbances from conduction and coupling - Part 2: Electrical transient conduction along supply lines only
GB/T 21437.3-2012 Road vehicles - Electrical disturbances from conduction and coupling - Part 3: Electrical transient transmission by capacitive and inductive coupling via lines other than supply lines
GB/T 28046.1-2011 Road vehicles - Environmental conditions and testing for electrical and electronic equipment - Part 1: General
GB/T 28046.2-2019 Road vehicles - Environmental conditions and testing for electrical and electronic equipment - Part 2: Electrical loads
GB/T 28046.3-2011 Road vehicles - Environmental conditions and testing for electrical and electronic equipment - Part 3: Mechanical loads
GB/T 28046.4-2011 Road vehicles - Environmental conditions and testing for electrical and electronic equipment - Part 4: Climatic loads
GB/T 28046.5-2013 Road vehicles - Environmental conditions and testing for electrical and electronic equipment - Part 5: Chemical loads
GB/T 30038-2013 Road vehicles - Degrees of electrical equipment protection (IP-code)
GB 34660-2017 Road vehicles - Requirements and test methods of electromagnetic compatibility

3 Terms, definitions and abbreviations

3.1 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

3.1.1

electronic toll collection on board unit

an electronic equipment installed inside a vehicle and communicating with ETC RSU in two directions to realize the function of toll collection without parking

3.1.2

electronic toll collection roadside unit

an electronic equipment installed outside a vehicle and communicating with ETC OBU in two directions to realize the function of toll collection without parking

3.1.3

transaction

the process for ETC OBU to establish communication link with ETC RSU to complete toll collection

3.2 Abbreviations

For the purposes of this document, the following abbreviations apply.

BER: Bit Error Rate
EIRP: Equivalent Isotropically Radiated Power
ETC OBU: Electronic Toll Collection On Board Unit