Energy Futures Lab Lunchtime Seminar Series
As part of the Energy Futures Lab Lunchtime Seminar Series, Manlika Sukitpaneenit will deliver a seminar entitled ‘High spatial resolution traffic flow and emissions based on taxi GPS data in Bangkok Metropolitan Region, Thailand’.
Abstract
High spatial resolution traffic flow is an important input variable for vehicle emissions estimates and health impact assessments. Due to the limited number of fixed detectors on roads, it is a challenging task to estimate the traffic flow on the entire the road network particularly in developing countries. In this study, we demonstrate a methodology for predicting traffic flow using the GPS data from approximately 3,000 taxis to estimate the average vehicle speed on each road link. The fundamental diagram, describing the relationship between traffic flow, speed, and density, is applied to estimate the hourly traffic flow. The methodology is applied to a case study in Bangkok Metropolitan Region (BMR), Thailand. COPERT, an average speed emissions model, is used to calculate the total emissions and spatial distribution of Particulate Matter less than 2.5 microns in diameter (PM2.5) and Nitrogen Oxide (NOx) at road links. The results show that the total emissions of PM2.5 and NOx were 9.67×103 and 329.57×103 kg/day respectively. Due to a large number of heavy-duty trucks, highways have the highest PM2.5 and NOx emissions.
Biography
Manlika is a PhD student at Transport and Environment in the Centre for Transport Studies. Her research aims to quantify vehicle emissions at high spatial and temporal resolutions by integrating fundamental traffic models and emission models. Before joining PhD programme at Imperial College London, she had worked at German International Cooperation (GIZ) as National Coordinator for Thailand in project “Clean Air for the Smaller Cities in the ASEAN Region” for three years. After that, she has been being a lecturer at Department of Geography, Chulalongkorn University.
Manlika received Bachelor of Arts with the first-class honors in Geography, Chulalongkorn University, Thailand. She completed Master of Science in Environmental Engineering and Management, Asian Institute of Technology. She is funded by Her Majesty the Queen Sirikit ‘s Scholarship to pursue PhD at Imperial College London.