PREDICTION OF L10 ON URBAN MAIN ROADS

A SIMPLE AND NON-STATISTICAL THEORETICAL METHOD FOR PREDICTING L10, THE SOUND LEVEL IN DBA EXCEEDED FOR 10 PER CENT OF THE TIME, DUE TO TRAFFIC IN URBAN MAIN ROADS, IS GIVEN HERE. L10 IS DETERMINED AS A FUNCTION OF THE RATES OF FLOW OF DIFFERENT TYPES OF VEHICLE FOR A GIVEN POSITION OF THE OBSERVER (E.G. AT KERBSIDE OR AT 10M FROM THE KERB). IT IS ASSUMED THAT THE TRAFFIC SPEED IS GENERALLY UNIFORM; THIS IS CONSISTENT WITH VEHICLE BEHAVIOUR ON SINGLE CARRIAGEWAY URBAN ROADS SUBJECTED TO A LOW SPEED LIMIT (E.G. 48KM/HR. VARIATIONS OF SPEED AND THE EFFECTS OF "BUNCHING" ARE TAKEN INTO ACCOUNT. THE PREDICTIONS OF L10 COMPARE WELL WITH EXPERIMENTAL VALUES OBTAINED BY STEPHENSON AND VULKAN. IT IS ALSO SHOWN THAT, EXCEPT WHERE THE DENSITY OF HEAVY VEHICLES IS LOW, L10 IS DETERMINED SOLELY BY THE PRESENCE OF HEAVY TRAFFIC. /AUTHOR/

  • Availability:
  • Corporate Authors:

    Acoustics Group of the Physical Society of London

    Postfach 347
    D-7000 Stuttgart 1,   Germany 
  • Authors:
    • Blitz, J
  • Publication Date: 1973

Language

  • Undetermined

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 210-218
  • Serial:
    • ACUSTICA
    • Volume: 29
    • Issue Number: 4
    • Publisher: C S HIRZEL VERLAG
    • ISSN: 0001-7884

Subject/Index Terms

Filing Info

  • Accession Number: 00263628
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Dec 13 1974 12:00AM