Abstract
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. One hundred eighty one ultrasonic detectors have been installed on these roads. First, a method to estimate vehicle emissions from running patterns was established by analyzing time-dependant emission data. Next, a method to estimate running patterns from the detector data was developed. 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. The developed system is useful to identify the road sections and time periods that have excessive emissions.
