statistical pass-by measurements – spb · 4 purpose. determination of road surfaces’ acoustic...
TRANSCRIPT
4
PURPOSE. Determination of road surfaces’ acoustic properties from MEASUREMENT PROCEDURE. Measurement of the sound pressu-
individual vehicles’ pass-by noise. The German road surface correction re level of a statistically significant number of individual pass-bys (light
factor D as defined in RLS-90 can also be determined. and heavy vehicles) at 7.5 m distance of the centre lane at two diffe-StrO
rent heights (1.2 m and 5.0 m). Air temperature and vehicle speed are
recorded simultaneously. MEASUREMENT METHOD. DIN ISO 11819-1: Acoustics –
Measurement of the influence of road surfaces on traffic noise – Part MEASUREMENT RESULTS. Mean pass-by noise levels for a particu-1: Statistical Pass-By method and GEStrO-92: Measurement method lar vehicle category and speed. The measurement result for light vehi-for the noise emission of road surfaces.cles at 120 km/h can be compared with the reference value according
to RLS-90. Values for different speeds can be converted. Also, a spec-SCOPE OF APPLICATION. This method is applicable to level road sec- tral analysis of the measured data can be performed. tions with constant traffic flow and no major changes in vehicle speed
or direction. MEASUREMENT CONDITIONS. The measurements should be car-
ried out for a traffic flow between 30 km/h and 130 km/h (depending
on traffic conditions), on dry road surfaces and at air and surface tem-
peratures above 5 °C. The measurement area must not be influenced
by large reflecting obstacles (buildings, road signs, etc.).
STATISTICAL PASS-BY MEASUREMENTS – SPB
CONTACT.
Manuel Männel Phone: +49 (89) 85602-204
Mail: [email protected]
Thorsten Otto Phone: +49 (89) 85602-344
Mail: [email protected]
www.MuellerBBM.com