1Annex 
Motor Vehicle Noise Control Standards (draft)  
 
Complete text of four articles promulgated on October 6,  2004 by Environmental Protection Administration Order Huan-
Shu-Kung-Tzu No. 0930066337D and Ministry of Transporta tion and Communications Order Chiao-Lu-Tzu No.  
093B000064. 
Revised attached table in Article 3 join tly promulgated on June 22, 2007 by Envi ronmental Protection Administration Order 
Huan-Shu-Kung-Tzu No. 0960044255D and Ministry of Trans portation and Communications Order Chiao-Lu-Tzu No. 
0960085028. 
Revised text of Article 1 and attached  tables in Article 3 jointly promulga ted on August 10, 2009 by Environmental 
Protection Administration Order Huan-Shu-Kung-Tzu No. 0980064269D and Ministry of Transportation and 
Communications Order Chiao-Lu-Tzu No. 0980085044. 
Revised text of Article 2 and attached tables in Articl e 3 jointly promulgated on mont h/date/Year by Environmental  
Protection Administration Order Huan-Shu-Kung-Tzu No. OOOOOOOOOD and Ministry of Transportation and 
Communications Order Ch iao-Lu-Tzu No. OOOOOOOOOO.  
 
Article 1 
These Standards are determined pursuant to Artic le 11, Paragraph 1 of the Noise Control Act. 
Article 2  
Terms used in these Standard s are defined as follows: 
I.   Acceleration noise standard  value means the acceleration noise  level measured  at a certain 
distance, in a certain gear while driving. 
II. Stationary noise standard value means the stationary noise level measured at a certain 
engine speed. 
III. New vehicle model certification means the new model vehicle noise review and testing 
performed after each type of new vehicle m odel has been manufactured or imported, and 
prior to sale or usage. 
IV. New vehicle testing means noise condition testing performe d after a vehicle has passed 
new vehicle model certification and following  a certain period of time or after a 
designated quantity has been  manufactured or imported. 
V.  In-use vehicle testing means non-regular vehi cle noise testing at ca r parks (stops), by the 
roadside, at diesel emissions testing stations or other suit able locations performed by the 
competent authority. 
VI. “PMR” denotes the Power-to-Mass Ratio In dex, means the ratio of rated maximum net 
power of a vehicle to its mass.  It’s de fine as: (Rated maxi mum power, kW)/(test 
vehicle’s mass, Ton)  
Article 3  
Motor vehicle noise control standard valu es are provided in the attached table  1 and table 2.  
Article 4  
These Standards shall take eff ect on the date of promulgation.   2Table 1. Motor Vehicle Noise Control Standard Values (5th Period)  
Motorcycles 
Delivery trucks, city buses 
over 3.5 tons 
Testing items  Sedan, Station wagon <= 4000c.c. Sedan, Station wagon > 4000c.c. minibuses, delivery trucks, less than 3.5
tons <= 150kW > 150kW  >= 50c.c > 50c.c. <= 100c.c. >100c.c. <= 175c.c > 175c.c. <= 550c.c  > 550c.c.  
Acceleration 
noise  74 74  77  78  80  72  75  77  80 80New vehicle  
Model certifi-
cation  Stationary 
noise  93 
10096 
(100)  93 93  99  84  90  90  90  94Fifth  
Period:  
1 January 2015  
(Motorcycles) 
& 
1 January 2016  
(all other 
vehicles)  In-use vehicle  
testing  Stationary 
noise  93 
10096 
(100)  93 93  99  84  90  90  90  94
Notes. 
Fourth and Fifth peri od control standards: 
(1) After January 1, 2007, vehicles manuf actured domestically and imported vehicl es must comply with fourth period 
control standards. 
(2) After January 1,2015, motorcycles ma nufactured domestically and imported vehi cles must comply with fifth period 
control standards.  
(3) After January 1,2016, all vehicles include Sedan, Station wagon, minibus, delivery trucks city bus etc., 
manufactured domestically and impor ted vehicles must comply with fifth period control standards.  
(4) When new vehicles are tested in accordance with Article 13 of the Motor Vehicle Type Noise Testing Compliance 
Verification Issuance and Revocation and Random Noise Testing Handling Regulations , the acceleration noise 
standard value shall be the new vehicle model certificat ion acceleration noise standard increased by 1dB(A) . 
(5) For sedans, station wagons and mini buses and small delivery trucks under 3.5 tons equipped with direct fuel 
injected diesel engines, the listed standard value of new type vehicle testing accelerati on noise standard values shall 
be increased by 1 dB(A). 
(6) For new type vehicle testing accelera tion noise standard values of off-road ve hicles over 2 tons (i n accordance with 
70/156 EEC Annex II off-road vehicle regulations) with en gine power greater than 150 kW, the listed standard 
value shall be increased by 2 dB(A); for engine power less than 150 kW, the listed standard value shall be increased 
by 1 dB(A). 
(7) For five-gear manual tran smission sedans and station wagons, minibuses  under 3.5 tons, other vehicles with an 
engine rate greater than 140 kW and pow er capacity greater than 75 kW per ton and those in third gear at 50 km/h 
within the testing area that exceed 61 km/hthe listed standard value of the new vehicle model certification 
acceleration noise standard value shall be increased by 1 dB(A). 
(8) For new vehicle type certification a nd new vehicle testing of sedans and stat ion wagons with engines located in the 
rear, the stationary noise standard value shall be 100 dB(A). (the plane perpendicular to the the front edge of the 
vehicle engine block and the vehicle's longitudinal center li ne; if located behind the center of the line connecting the 
forwardmost axial center and the rearmost axial center, the vehicle shall be considered to have a rear engine)  
(9) For fire trucks and disaster relief vehi cles (including vehicles with fire trucks or disaster relief vehicle chassis) with 
a gross weight in excess of 3.5 tons, the new vehicle model certification and new vehicle testing acceleration noise 
standard value shall be 81dB(A) for engine power less th an 150kW and 83 dB(A) for engine power equal to or 
greater than 150kW. 
   3Table 2 Motorcycle Noise Control Standard Values ( 6th Period)  
Acceleration 
Noise  Stationary Noise  
Testing items  PMR <= 25  25 < PMR <= 50  PMR > 50  >  50c.c  > 50c.c. <= 100c.c.  >100c.c. <= 175c.c  > 175c.c. <= 550c.c  > 550c.c.  
New vehicle  
Model certification  73 74 77 81 87 87  87  92
Sixth Period:   
1 January 2017  In-use vehicle testing  - -  - 84 90 90  90  94
Notes  
(1) For the sixth period, control standards shall be implemented by testing employing the motor vehicle 
noise measurement method announced by the central competent authority.  
(2) After January 1,2017, new motorcycle  models manufactured domestically and imported must comply with 6th  
period control standards.  
(3) After January 1,2018, all motorcycle models manufactured  domestically and imported must comply with 6th period 
control standards.  
(4) For motorcycles, PMR>50, tested in s econd gear only, the acceleration noise st andard value shall be increased by 1 
dB(A).