1 / 7

Comparison of TNO and OICA Analyses for M1 Categories: Insights from 54th GRB Meeting

This document presents a detailed comparison between the TNO and OICA analyses for M1 vehicle categories, discussed during the 54th GRB meeting held from September 19-21, 2011. It highlights the evaluation of sound levels in M1 and M1G categories, focusing on off-road vehicles and the PMR classification. The analyses reveal that TNO and OICA data yield similar results when analyzed under consistent conditions. This document underscores the importance of defining appropriate conditions for comparative studies in vehicle noise regulation.

josie
Télécharger la présentation

Comparison of TNO and OICA Analyses for M1 Categories: Insights from 54th GRB Meeting

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Informal documentGRB-54-16 (54th GRB, 19-21 September 2011, agenda item 3(b)) Difference between TNO and OICA Analysis for M1 Sub Categories 19-21 September 2011 JASIC

  2. Comparison between TNO and OICA analysis for M1 category

  3. TNO analyzed M1 and M1G (off road) separately but PMR is not taken into account. 10% cut off sound level (TNO data) 10% cut off M1 72dB(A) 10% cut off M1G 74dB(A)

  4. 10% cut off sound level (OICA data) OICA divided M1 into 3 sub categories depending on PMR and analyzed M1 and M1G. 10% cut off M1-A PMR<125 M1-B PMR=125:150 M1-C PMR>150 M1-D Off Road

  5. 100% 90% M1 PMR<125 80% M1 PMR=125:150 M1 PMR>150 60% M1 Off Road 累積頻度, % 40% 20% 0% 62 64 66 68 70 72 74 76 78 80 Lurban, dB(A) 10% cut off sound level (re-analyze TNO data) TNO data were divided into the same sub categories as OICA and re-analyzed. 10% cut off M1-A PMR<125 M1-B PMR=125:150 M1-C PMR>150 M1-D Off Road cumulative frequency

  6. Results of OICA analysis and TNO re-analysis 10% cut off sound levels in TNO data base are same as those in OICA results in analyzing with same sub categories. 10% cut off OICA 74 72 75 73 10% cut off M1-A PMR<125 M1-B PMR=125:150 M1-C PMR>150 cumulative frequency M1-D Off Road TNO

  7. Summary • The results of TNO and OICA are same when the data are analyzed with the same condition. • Appropriate condition for analysis should be defined.

More Related