To be fully effective, the requirements for maximum noise levels for new vehicles should be backed up by some means of in-use noise control. In the United Kingdom, detailed proposals for in-use noise control of motor vehicles by measurement were first made in 1963. Subjective and imprecise methods had existed since 1912 but it was felt that the powers of the police to enforce noise control of road vehicles would be strengthened by the introduction of a scientific, precise measurement method with regulated limits. Based upon this precept, an in-use vehicle drive pass noise test was introduced in 1968. However, this has proved to be unpopular with enforcement officers on the grounds that it is too difficult to perform. There are 2 approaches to in-use control, annual examination and random roadside spot checks. The risk of spot check enforcement is a greater deterrent to running a vehicle in obviously noisy condition. However, it is much more difficult to devise a roadside test that is easy to perform and does not require a large investment in equipment, that may only see limited use, than it is to devise a test for the more favourable conditions of a permanent test site. A number of proposals have been made for a stationary vehicle noise test intended for use at the roadside and the purpose of this paper is to review the test data and experience gained of those procedures and to see how they correlate to the moving vehicle test. /TRRL/

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  • Corporate Authors:

    Road Safety Study and Research Fund, Belgium

    14 rue du Gouvernement Provisoire
    1000 Brussels,   Belgium 
  • Authors:
    • Ellis, M V
    • Waters, P E
  • Publication Date: 1978

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Filing Info

  • Accession Number: 00302477
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Dec 29 1979 12:00AM