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- W582693166 abstract "Environmental problems such as air pollution, noise and vibration caused by road traffic are crucial issues in Japan. Intelligent Transportation Systems (ITS) is expected to be one of the key components aiding the solution of these problems. The objective of this study is to develop an emission monitoring system that estimates NOx (nitrogen oxides), PM (particulate matter) and CO2 (carbon dioxide) emissions on each road section using vehicle detectors. The study roads are Route 6 (a total length of 12km), Route 8 (a total length of 10km) and Route 16 (a total length of 29km) in Kashiwa, Chiba, Japan, where 181 ultrasonic vehicle detectors are installed. First, a method to estimate vehicle emissions from running patterns was established by analyzing time-dependant emission data. This data was obtained through the use of a chassis dynamometer. Next, a method to estimate running patterns from the detector data was developed. Test-car runs were carried out in order to collect vehicle running patterns on 238 road sections of the study roads. In conjunction with the test-car runs, vehicle detector data for the time period that the test car passed under each detector was collected. The emissions generated on the study roads were estimated using the detector data from March 19th, 2003. The results from the system include the road maps that indicate the emissions in each road section, and the time-space diagram of the emissions on the study roads. In order to examine the accuracy of the estimated results, calculated NOx emissions on Route 16 were compared to the NOx concentration that was observed alongside the same road. The results illustrated that the fluctuation patterns of estimated NOx emissions were similar to that of observed NOx concentration; although, some partial inconsistencies were presented. The developed system is useful to identify the problematic road sections and the time periods that exhaust emission was excessive. Therefore the system is expected to be a useful tool in the design of detailed traffic management scheme to alleviate environmental problems." @default.
- W582693166 created "2016-06-24" @default.
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- W582693166 date "2004-01-01" @default.
- W582693166 modified "2023-09-28" @default.
- W582693166 title "MONITORING SYSTEM OF AUTOMOTIVE EXHAUST EMISSIONS UTILIZING VEHICLE DETECTORS" @default.
- W582693166 hasPublicationYear "2004" @default.
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