Establishment and Simulation Application of Vehicle Noise Emissions Model for Sloped Roads

Traffic noise prediction is an important topic for traffic environmental planning in cities, and an accurate noise emission model is the key to the prediction of traffic noise. Since sloped road sections are increasing in the urban road network, a single vehicle noise emission model for sloped roads is necessary. This study shows that the driving state of vehicles on a sloped road section can be equivalently converted to the driving state on a horizontal road section, with the difference between these two states being the extra acceleration and extra output power of the vehicle engine. An experiment is conducted, and hundreds of data points of vehicles’ speed, acceleration and noise emissions values are collected. The least-squares method is applied to establish a single vehicle noise emission model for sloped roads, and the accuracy of the model is verified by comparison with measured data and the canonical values. The results show that the average error between the model established in this paper and the measured values is less than 2 dB(A); therefore, the accuracy of prediction is greatly improved compared to the canonical values. A traffic simulation is conducted, and the sound field for a two-lane slope road is drawn. The model established in this paper can be applied to the prediction of road traffic noise on sloped road sections.

• Supplemental Notes:
  • This paper was sponsored by TRB committee ADC40 Standing Committee on Transportation-Related Noise and Vibration.
• Authors:
  • Yang, WeiJun
  • Lan, Ziqin
  • Zhong, Shuqi
  • Wang, Haibo
  • Cai, Ming
• Conference:
  • Transportation Research Board 97th Annual Meeting
  • Location: Washington DC, United States
  • Date: 2018-1-7 to 2018-1-11
• Date: 2018

Language

• English

Media Info

• Media Type: Digital/other
• Features: References; Tables;
• Pagination: 8p

Subject/Index Terms

• TRT Terms: Mathematical prediction; Noise; Roads; Simulation; Slopes; Traffic noise
• Subject Areas: Environment; Highways;

Filing Info

• Accession Number: 01661462
• Record Type: Publication
• Report/Paper Numbers: 18-03847
• Files: TRIS, TRB, ATRI
• Created Date: Feb 28 2018 9:23AM