Air quality is degraded by many factors, among which the emissions from on-road vehicles play a significant role. Timely and accurate estimate of such emissions becomes very important for policy-making and effective control measures. However, lack of traffic data and outdated emission software make this task difficult. This research has demonstrated a new method that facilitates the vehicular emission inventories at the local level by using shorter-time Highway Performance Monitoring System (HPMS) traffic data along with the latest U.S. Environment Protection Agency (EPA) emission modeling software, MOBILE6. The conversion methodology was developed for converting readily available HPMS traffic volume data into EPA MOBILE-based traffic classifications, and a corresponding software program was written for automating the process. EPA MOBILE6 model was used to obtain emissions of nitrogen oxides (NOx), volatile organic compound (VOC), and cabon monoxide (CO) emitted by the parent traffic and subsampled traffic data, and these emissions were additionally compared. The case study has shown that the difference of the magnitude between the emission estimates produced by certain subsampled and parent traffic data are minor, indicating that subsampled HPMS data can be used for reporting parent traffic emissions. It was also observed that traffic emissions follow a Weibull distribution, and NOx emissions were more sensitive to the traffic data composition than VOC and CO. Lastly, use of average emission values of 20 or 30 consecutive minutes appears to be valid for representing hourly emissions. Copyright 2005 Air & Waste Management Association.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Use of subsampled traffic data to estimate roadway emissions, including conversion to MOBILE6 vehicle classifications


    Additional title:

    Der Einsatz aus Kurzzeit-Beobachtungen gewonnener Verkehrsdaten zur Abschätzung der Verkehrs-Emissionen, einschließlich Datenkonversion entsprechend MOBILE6 Fahrzeugklassierung


    Contributors:


    Publication date :

    2005


    Size :

    9 Seiten, 6 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    Using MOBILE6 Capabilities for Modeling Start Emissions

    National Research Council (U.S.) | British Library Conference Proceedings | 2005



    Development of Diurnal and Resting Loss Emissions Estimates for MOBILE6

    Landman, L. C. / Coordinating Research Council | British Library Conference Proceedings | 1997


    Progress Report on Development of Mobile6

    Lorang, P. / Coordinating Research Council | British Library Conference Proceedings | 1996


    AIR CONDITIONING AND FACILITY EFFECTS IN MOBILE6

    Koupal, J. / Coordinating Research Council | British Library Conference Proceedings | 1998