1. China Automotive Technology and Research Center Co., Ltd
GTRQRTV-06-08
8th GRB ASEP IWG,
Baltimore,
30-31 May 2018.
Introduction of China AVAS requirements and test methods of electric vehicles running at low speed
China Automotive Technology and Research Center Co., Ltd 1 1

2. Contents A summary of AVAS and related standards in China
Scope (vehicle categories and technical categories)
GB/T XXXXX-20xx <Acoustic vehicle alerting system of electric vehicles running at low speed>
Key points and problems
Items for future 2

3. A summary of AVAS and related standards in China
Standards No.
Requirements
Test methods
GB <Technical specifications for safety of power-driven vehicles operating on roads> √
GB/T <Battery electric passenger cars - Specifications>
GB/T <Battery electric goods vehicles - Specifications>
GB/T <Plug-in hybrid passenger cars - Specifications>
GB/T XXXXX-20xx <Acoustic vehicle alerting system of electric vehicles running at low speed>
*The necessity of AVAS standard was firstly realized in M1 category battery electric vehicles in year 2012. 3

4. Scope of AVAS and related standards in China
Technical M1 M2 M3 N1 N2 N3
Battery EV √
Hybrid
Plug-in
Others
Fuel cell
GB 7258=√, GB/T 28382= √, GB/T 34585=√, GB/T = √, GB/T XXXXX= √ 4

5. GB/T XXXXX-20xx Working group established, 2014.3;
Timetable of GB/T XXXXX-20xx
Working group established, ;
Waiting for approval,
Consideration
China background noise.
Other GB or GB/T standards.
UN R138 Uniform provisions concerning the approval of Quiet Road Transport Vehicles with regard to their reduced audibility (QRTV). 5

6. GB/T XXXXX-20xx
Technical parameters
Scope: M1 and N1 categories pure electric vehicles, hybrid vehicles with pure electric driving mode, and fuel cell electric vehicles.
Speed Range: 0 < V ≤ 20 km/h, optional at 0 km/h speed;
Sound level: 10 km/h - 52 dB(A), 20 km/h - 58 dB(A); max - 75 dB(A); 2 dB(A) higher than UN R138;
Freq. Shift: when the speed is in the range of 5-20 km/h, at least one 1/3 octave frequency will increase with the speed of the car. The minimum average frequency shift rate of this frequency should satisfy ≥ 0.8% (km/h).
Pause function: optional. 6

7. Key points and problems
0km/h
GB <Technical specifications for safety of power-driven vehicles operating on roads>
GB/T <Battery electric passenger cars - Specifications>
GB/T <Battery electric goods vehicles - Specifications>
*When vehicles are starting, and the speed is lower than 20km/h, AVAS should work.
GB/T <Plug-in hybrid passenger cars - Specifications>
*When vehicles are running at E-mode, and the speed is lower than 20km/h, AVAS should work.
GB/T Motor vehicle—Starting performance—Test method
*Starting performance = ready + go
Conclusion: should be make certain. 7

8. Key points and problems
Limit value
The sound level and frequency parameters clear enough for alerting?
*The sound should be easily be recognized by
----Car and transport management authorities
----Blind people
----Aged people and children
----Absent-minded people (smart phone users)
Pause function
Reduce the noise pollution on specific situations such as: residential area during middle night;
*Depends on sound level and frequency parameters.
Possibility of more accidents caused by pause function.
*When vehicles are starting, and the speed is lower than 20km/h, AVAS should work. 8

9. Items for future
Scope
Harmonize different GB and GB/T standards scopes (vehicles and technical categories
Pause 0km/h
Uniform requirements on pause 0km/h
*Based on safety,
*Sound quality.
Limit value
Feedback of the limit value now
----Car and transport authorities
----Blind people
----Aged people and children
----Absent-minded people (smart phone users)
How to decide if the AVAS is working, paused or failure? 9

10. Thanks for your attention
National Automotive Standardization Technical Committee
Thanks for your attention
Web site： 10