THE INFLUENCE OF THE ROAD SURFACE ON DRIVING COMFORT

EINFLUSS DER STRASSENOBERFLACHE AUF DEN FAHRKOMFORT

On the basis of the comprehensive investigations in the framework of AASHO-road tests it is shown that there is a close relationship between the actual geometry of the road surface and the subjective perception of driving comfort. An exact mathematical-physical analysis permits calculation of the magnitude of perception in the general case for any vehicle, and for any particular geometric form of road surface over the entire speed range. If one considers cars only, and in particular a typical standard car, the relations are much simplified without loss of general validity of the statements. It is remarkable that in the speed range of 50 to 130 km/h the wave lengths between 7 and 40 M have the greatest influence on driving comfort. If one applies the new theory to the results of the AASHO test, good agreement in principle is observed, moreover a number of phenomena can now be explained or more correctly interpreted. An example is the differentiation of rigid and flexible pavements in regard to driving comfort which led to the view that rigid constructions are regarded subjectively more favourably by vehicle users. It was shown however that this difference can be attributed solely to the geometry of the measuring instrument "profilometer". Finally there is a simple method of evaluating driving comfort in relation to speed independently of the type of pavement construction. /TRRL/

  • Corporate Authors:

    Technical University of Vienna, Austria

    Karlsplatz 13
    A-1040 Vienna,   Austria 
  • Authors:
    • AUGUSTIN, H
  • Publication Date: 1977-5-9

Language

  • German

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 72 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00182731
  • Record Type: Publication
  • Source Agency: Bundesanstalt für Straßenwesen (BASt)
  • Report/Paper Numbers: Thesis
  • Files: ITRD, TRIS
  • Created Date: Oct 31 1978 12:00AM