MEASUREMENT AND EVALUATION OF VIBRATIONS GENERATED BY UNEVENNESS OF ROADS

MAETNING OCH UTVAERDERING AV VIBRATIONER ALSTRADE AV VAEGOJAEMNHETER

This is a transcript of a lecture given at the symposium "whole-body vibrations" on November 12, 1980, arranged by the Swedish academy for engineering sciences. Various methods of measuring the unevenness of roads have for many years been studied at the Swedish road and traffic research institute (vti). A series of studies have been made into the influence of unevenness on driver comfort and performance and on the manoeuvrability of vehicles. The aim has been to establish a limit value for acceptable unevenness based on the needs of the user. The results of these studies are summarized and discussed. The validity of subjective estimates is however questioned by a great number of researchers, who have begun to study the influenceof vibrations on performance and fatigue. For this purpose a simulator is being used at the vti. The results of an experiment made in 1977 show an immediate impairment of performance and a presence of after-effects. In a current experiment vibrations, noise and infrasonics are being studied. A new measuring vehicle is being developed intended for use on surfaced roads; it will be capable of measuring the following surface characteristics: evenness, friction, transverse profile, crossfall and possibly roll resistance. (TRRL)

Language

  • Swedish

Media Info

  • Features: Figures; Photos; References; Tables;
  • Pagination: 25 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00341400
  • Record Type: Publication
  • Source Agency: Swedish National Road and Transport Research Institute (VTI)
  • Report/Paper Numbers: VTI SAERTRYCK NR 57 Monograph
  • Files: ITRD, TRIS
  • Created Date: Dec 22 1981 12:00AM