Highlights Detailed explanation of errors in speed correction factors (SCFs) Quantifying the impact of vehicle specific power (VSP) distribution on SCFs. Quantitative analysis of relationship between emission rate and SCFs.

    Abstract Speed correction factors (SCFs) reflect the impact of traffic conditions on vehicle emissions. However, uncertainty often occurs when calculating SCFs in existing emission models. Investigating how uncertainty occurs is helpful in improving accuracy when calculating SCFs. This study calculates SCFs of carbon dioxide (CO2) of non-hybrid light-duty vehicles on urban restricted access roadways, and analyzes two important explanatory variables when calculating SCFs: speed-specific vehicle specific power (VSP) distributions and emission rates. The characteristics of how SCFs change in response to changes in VSP distributions and emission rates are discussed in detail. The results show that distortions in VSP distributions and emission rates significantly affect SCFs. A 1% change of the fraction in a VSP bin or a 1% change in the average emission rate in a VSP bin can cause 1.3–3.2% or 0.08–0.13% of changes in SCFs, respectively. These findings are helpful in reducing uncertainty when calculating SCFs.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    How do errors occur when developing speed correction factors for emission modeling?


    Beteiligte:
    Zhang, Zeyu (Autor:in) / Song, Guohua (Autor:in) / Zhang, Leqi (Autor:in) / Zhai, Zhiqiang (Autor:in) / He, Weinan (Autor:in) / Yu, Lei (Autor:in)


    Erscheinungsdatum :

    2021-01-01




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    The Performance of a 4-D Experimental Flight Management System when Errors Occur in Forecast Meteorological Data

    Wolfe, A. / Jesson, M. / Lunnon, R. W. et al. | British Library Conference Proceedings | 1997



    A Comparison Between Emission Speed Correction Factors and Vehicle Fuel Consumption

    An, F. / Barth, M. / Coordinating Research Council | British Library Conference Proceedings | 1996


    MINIMIZINING MESSAGE PROPAGATION TIMES WHEN BRIEF DATALINK INTERRUPTIONS OCCUR

    MCGUFFIN THOMAS F / JUDD THOMAS D | Europäisches Patentamt | 2019

    Freier Zugriff

    MINIMIZINING MESSAGE PROPAGATION TIMES WHEN BRIEF DATALINK INTERRUPTIONS OCCUR

    MCGUFFIN THOMAS F / JUDD THOMAS D | Europäisches Patentamt | 2018

    Freier Zugriff