| Title: | Real-World Vehicle Emissions Characterization for the Shing Mun Tunnel in Hong Kong and Fort McHenry Tunnel in the United States |
| Author(s): | Wang X; Khlystov A; Ho KF; Campbell D; Chow JC; Kohl SD; Watson JG; Lee SF; Chen LA; Lu M; Ho SSH; |
| Address: | "Desert Research Institute, Reno, Nevada, United States. The Chinese University of Hong Kong, China. The Hong Kong Polytechnic University, Hong Kong, China. University of Nevada, Las Vegas, United States. University of Nevada, Reno, United States. Hong Kong Premium Services and Research Laboratory, Hong Kong, China" |
| ISSN/ISBN: | 1041-5505 (Print) 2688-6855 (Electronic) 1041-5505 (Linking) |
| Abstract: | "INTRODUCTION: Motor vehicle exhaust is an important source of air pollutants and greenhouse gases. Concerns over the health and climate effects of mobile-source emissions have prompted worldwide efforts to reduce vehicle emissions. Implementation of more stringent emission standards have driven advances in vehicle, engine, and exhaust after-treatment technologies as well as fuel formulations. On the other hand, vehicle numbers and travel distances have been increasing because of population and economic growth and changes in land use. These factors have resulted in changes to the amount and chemical composition of vehicle emissions. Roadway tunnel studies are a practical way to characterize real-world emissions from the on-road vehicle fleet in an environment isolated from other combustion pollution sources. Measurements in the same tunnel over time allow evaluation of vehicle emission changes and the effectiveness of emission reduction measures. Tunnel studies estimate the impacts of vehicle emissions on air quality and traffic-related exposures, generate source profile inputs for receptor-oriented source apportionment models, provide data to evaluate emission models, and serve as a baseline for future comparisons. The present study characterized motor vehicle emission factors and compositions in two roadway tunnels that were first studied over a decade ago. The specific aims were to (1) quantify current fleet air pollutant emission factors, (2) evaluate emission change over time, (3) establish source profiles for volatile organic compounds (VOCs) and particulate matter |
| Keywords: | Air Pollutants/*analysis Air Pollution/analysis Baltimore Hong Kong Humans Particulate Matter/*analysis Vehicle Emissions/*analysis Volatile Organic Compounds/*analysis; |
| Notes: | "MedlineWang, Xiaoliang Khlystov, Andrey Ho, Kin-Fai Campbell, Dave Chow, Judith C Kohl, Steven D Watson, John G Lee, Shun-Cheng Frank Chen, Lung-Wen Antony Lu, Minggen Ho, Steven Sai Hang eng Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. Technical Report 2019/10/31 Res Rep Health Eff Inst. 2019 Mar; 2019(199):5-52" |
