NEW MEASURING METHOD FOR RIDE COMFORT IN TRANSIT VEHICLES

Principles of several ride comfort criteria in use are presented and compared. The proposed criterion of exposure duration for given vibration levels by the International Organization for Standardization (ISO) were selected for ride comfort measurements. The portable Ride Comfort Meter provides single value measurements which correspond to ISO weighted rms values of effective accelerations. Each measurement takes 15 seconds and is called the Ride Index (RI). Statistical methods were used to analyze the ride comfort data obtained. Resultant statistical means for vertical and lateral RIs versus vehicle speeds in guideway curves and on straight sections are shown. Linear regression using all data points yielded RI equations for describing the relation of vertical and lateral RI to vehicle speed. Results of ride comfort are shown as the percentage of trip time which the vertical and lateral RIs were exceeded. The ISO reduced comfort boundary is used as a basis for comparison between the Morgantown system and other transit systems, additional ride comfort measurements were made at three other automated guideway systems and five conventional transit systems. All ride comfort measurements were performed, employing the new Ride Comfort Meter Type II developed and built by Delft University of Technology in Holland.

Media Info

  • Pagination: p. 266-270

Subject/Index Terms

Filing Info

  • Accession Number: 00302103
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Report/Paper Numbers: 79CH1378-9VT Conf Paper
  • Files: TRIS
  • Created Date: Nov 27 1981 12:00AM