Track Certification

ISO 10844:2021 and ISO 10844:2014 specify the essential characteristics of a test surface intended to be used for measuring vehicle and tyre or road noise emissions.

• Composition of the pavement
  • Maximum chipping (aggregate) size
  • Sieve grading curve (gradation or job mix formula)
  • Wearing course thickness
• Geometry
  • Size and shape
  • Proximity of large reflecting objects
  • Gradient and crossfall (longitudinal and transverse slope)
• Surface properties
  • Surface irregularities (dips and bumps)
  • Surface texture (mean profile depth or MPD)
  • Sound absorption coefficient

If you conduct automotive or tire testing following any of these standards, then your track needs to conform to ISO 10844.

• UN ECE Regulations –
  • UN ECE Reg 9, Uniform provisions concerning the approval of category L2, L4 and L5 vehicles with regard to noise
  • UN ECE Reg 41, Uniform provisions concerning the approval of motorcycles with regard to noise
  • UN ECE Reg 51, Uniform provisions concerning the approval of motor vehicles having at least four wheels with regard to their sound emissions
  • UN ECE Reg 63, Uniform provisions concerning the approval of two-wheeled mopeds with regard to noise
  • UN ECE Reg 117, Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance
  • UN ECE Reg 138, Uniform provisions concerning the approval of Quiet Road Transport Vehicles with regard to their reduced audibility (QRTV)

• ISO Standards –
  • ISO 362, Measurement of noise emitted by accelerating road vehicles
  • ISO 362-1, Measurement of Noise Emitted by Accelerating Road Vehicles – Engineering Method – Part 1: M and N Categories
  • ISO 362-2, Measurement of Noise Emitted by Accelerating Road Vehicles – Engineering Method – Part 2: L Category
  • ISO 362-3, Measurement of noise emitted by accelerating road vehicles – Engineering method – Part 3: Indoor testing M and N categories
  • ISO 5130, Measurements of sound pressure level emitted by stationary road vehicles
  • ISO 13325, Tyres – Coast-by Methods for Measurement of Tyre-to-Road Sound Emission
  • ISO 16254, Measurement of sound emitted by road vehicles of category M and N at standstill and low speed operation

• SAE Standards –
  • SAE J336, Sound Level for Truck Cab Interior
  • SAE J366, Exterior Sound Level for Heavy Trucks and Buses
  • SAE J986, Sound Level for Passenger Cars and Light Trucks
  • SAE J1470, Measurement of Noise Emitted by Accelerating Highway Vehicles
  • SAE J2805, Measurement of Noise Emitted by Accelerating Road Vehicles
  • SAE J2889, Measurement of Minimum Noise Emitted by Road Vehicles

• Japan TRIAS – 
  • Japan TRIAS 09 – R117, External noise of tires · Frictional force on wet road · Test related to rolling resistance (Agreement Regulation No. 117)
  • Japan TRIAS 30 – J038, Proximity exhaust noise test
  • Japan TRIAS 30 – J039, Stationary running noise test
  • Japan TRIAS 30 – J040, Accelerated running noise test
  • Japan TRIAS 30 – R041, Noise test for motorcycles (Agreement Regulation No. 41)
  • Japan TRIAS 30 – R051, Examination on external noise standards for automobiles (Agreement Regulation No. 51)
  • Japan TRIAS 43(7) – R138, Vehicle approach report device test (Agreement Regulation No. 138)

• GOST – 
  • GOST R 51616, Vehicles internal noise permissible levels and test methods – ГОСТ P 51616 – Автомобильные транспортные средства. Шум внутренний. Допустимые уровни и методы испытаний
  • GOST 27435, External Noise Of Motor Vehicles – Permissible Level And Methods Of Measurement – ГОСТ 27436 – Внешний шум автотранспортных средств. Допустимые уровни и методы измерений
  • GOST 27436, Internal Noise Of Motor Vehicles – Permissible Level And Methods Of Measurement – ГОСТ 27435 – Внутренний шум автотранспортных средств. Допустимые уровни и методы измерений

• Other standards and regulations –
  • USDOT NHTSA FMVSS No. 141, Minimum Sound Requirements for Hybrid and Electric Vehicles.
  • 49 CFR 571, Federal Motor Vehicle Safety Standards
  • Transport Canada, Test Method 1106, Noise Emission Tests, for compliance with Standard 1106 of Schedule V.1 to the Motor Vehicle Safety Regulations (CMVSS 1106)
  • US EPA 40 CFR 205, Transportation Equipment Noise Emission Controls
  • ASEP, Additional Sound Emission Provisions
  • EU Regulation No 540/2014, the sound level of motor vehicles and of replacement silencing systems. Amends EU Directive 2007/46/EC.
  • US EPA NBSIR 76, An Evaluation and Assessment of Existing Data and Procedures for the Measurement of Noise from Motorcycles
  • China GB 1495, Limits and measurement methods for noise emitted by accelerating motor vehicles – 汽车加速行驶车外噪声限值及测量方法（中国第三、四阶段）
  • China GB/T 22157, Acoustics—Specification of test tracks for measuring noise emitted by road vehicles and their tyres – 声学 测量道路车辆和轮胎噪声的试验车道技术规范
  • JIS D 8301:2013 (JSAE), Acoustics – Specification of test tracks for measuring noise emitted by road vehicles and their tyres
  • JIS D 1024-1:2016, Measurement of noise emitted by accelerating road vehicles – Engineering method – Part 1: M and N categories
  • DIN ISO 10844:2014, Acoustics – Specification of test tracks for measuring noise emitted by road vehicles and their tyres – Akustik – Anforderungen an Prüfstrecken zur Messung der Geräuschemission von Straßenfahrzeugen und ihren Reifen
  • Australian Vehicle Standard, Australian Design Rule 28/01 – External Noise of Motor Vehicles, 2006
  • Australian Vehicle Standard, Australian Design Rule 83/00 – External Noise, 2005
  • Brazil ABNT NBR 15145, Acoustics – Measurement of noise emitted by accelerating road vehicles – Engineering method – Acústica – Medição de ruído emitido por veículos rodoviários automotores em aceleração – Método de engenharia
  • Brazil ABNT NBR 9714, Road vehicle – Noise emitted in the stopped condition – Veículo rodoviário automotor – Ruído emitido na condição parado
  • Taiwan (ROC) CNS 5799 – Test method for noise level of motor vehicles – 機動車輛噪音量試驗法
  • GCC Standardization Organization GSO ISO 10844:2015 – Acoustics – Determination of test tracks for the measurement of noise from road vehicles and their tires – الصوتيات — تحديد مسارات الاختبار لقياس الضجيج الصادر من مركبات الطرق وإطاراتها

When you evaluate ISO 10844 for conformance, the following test standards are used.

• ISO 13472-2, Measurement of sound absorption properties of road surfaces in situ – Part 2: Spot method for reflective surfaces
• ISO 13473-1, Characterization of pavement texture by use of surface profiles – Part 1: Determination of mean profile depth
• ISO 13473-3, Characterization of pavement texture by use of surface profiles – Part 3: Specification and classification of profilometer
• ISO/TS 13473-4, Characterization of pavement texture by use of surface profiles – Part 4: Spectral analysis of surface profiles
• CEN EN 13036-1, Road and airfield surface characteristics – Test methods – Part 1: Measurement of pavement surface macrotexture depth using a volumetric patch technique
• CEN EN 13036-7, Road and airfield surface characteristics – Test methods – Part 7: Irregularity measurement of pavement courses: the straightedge test