Ongoing work in the area of tire pavement–acoustics has definitively determined that there can be a significant variation of noise levels between the loudest and quietest pavements. With the use of the onboard sound intensity (OBSI) measurement procedure, it has also been determined that tire–pavement noise is highly correlated to the overall traffic noise levels, especially when traffic is flowing at freeway speeds. OBSI presents road agencies with a potential new tool for lowering traffic noise levels by using quieter pavements. Changing from a loud or old and raveled pavement to a newer, smoother, lower noise pavement can yield acoustic benefits to roadside communities or “receivers.” The decrease in noise level depends on the difference between OBSI levels of the existing pavement and the selected quieter pavement, and the magnitude of this decrease may also be influenced by vehicle mix. After the decision to use a quieter pavement has been made, the end limits for the pavement must be determined. The problem is somewhat similar to deciding where to terminate a sound wall relative to the location of the roadside receivers. This analysis determined that the quiet pavement end limits were less sensitive to variation in typical roadway cross sections, somewhat sensitive to the distance between the receiver and the roadway and where the quiet pavement terminates, and very sensitive to the absolute differences between the noisier and quieter pavements.
Determining End Limits of Quieter Pavement Projects
Transportation Research Record: Journal of the Transportation Research Board
Transportation Research Record: Journal of the Transportation Research Board ; 2233 , 1 ; 145-151
01.01.2011
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Determining End Limits of Quieter Pavement Projects
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