Advanced Search
MyIDEAS: Login to save this paper or follow this series

Individual Vehicle Speed Estimation Using Single Loop Inductive Waveforms

Contents:

Author Info

  • Sun, Carlos
  • Ritchie, Stephen G.
Registered author(s):

    Abstract

    Travel time is the reciprocal of speed and is a useful measure of road congestion and traffic system performance. Travel time is also a basic traffic variable that is used in many Intelligent Transportation System (ITS) strategies such as route guidance, incident detection, and traveler information systems. Previously, speeds were mainly acquired from double inductive loops configured as speed traps, since single loop speed estimates based on assumptions of a constant vehicle length were inaccurate. However, more accurate measurements of speed can now be accomplished with single loops by utilizing inductive waveforms of vehicles that are outputed from newer detector cards. An algorithm using signal processing and statistical methods was developed to extract speeds from inductive waveforms. The results show that the proposed algorithm performs better than conventional single loop estimation methods. The results also show that the algorithm is robust under different traffic conditions and is transferrable across surveillance sites without the need for recalibration. The use of the extensive single loop surveillance infrastructure is a cost-effective way of obtaining more accurate network-wide travel time information. Key Words: speed estimation, inductive waveform, vehicle signature, single loop detector

    Download Info

    If you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.
    File URL: http://www.escholarship.org/uc/item/2zz4b12p.pdf;origin=repeccitec
    Download Restriction: no

    Bibliographic Info

    Paper provided by Institute of Transportation Studies, UC Berkeley in its series Institute of Transportation Studies, Research Reports, Working Papers, Proceedings with number qt2zz4b12p.

    as in new window
    Length:
    Date of creation: 01 Oct 1999
    Date of revision:
    Handle: RePEc:cdl:itsrrp:qt2zz4b12p

    Contact details of provider:
    Postal: 109 McLaughlin Hall, Mail Code 1720, Berkeley, CA 94720-1720
    Phone: 510-642-3585
    Fax: 510-643-3955
    Email:
    Web page: http://www.escholarship.org/repec/its/
    More information through EDIRC

    Related research

    Keywords: Automobiles--Speed--Mathematical models;

    References

    No references listed on IDEAS
    You can help add them by filling out this form.

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as in new window

    Cited by:
    1. Sogutlugil, Mihriban, 2005. "Examining the Effects of Variability in Average Link Speeds on Estimated Mobile Source Emissions and Air Quality," University of California Transportation Center, Working Papers qt9j08v6rr, University of California Transportation Center.
    2. Ritchie, Steven & Park, Seri & Oh, Cheol & Jeng, Shin-Ting & Tok, Andre, 2005. "Field Investigation of Advanced Vehicle Reidentification Techniques and Detector Technologies - Phase 2," Institute of Transportation Studies, Research Reports, Working Papers, Proceedings qt3jq8609j, Institute of Transportation Studies, UC Berkeley.

    Lists

    This item is not listed on Wikipedia, on a reading list or among the top items on IDEAS.

    Statistics

    Access and download statistics

    Corrections

    When requesting a correction, please mention this item's handle: RePEc:cdl:itsrrp:qt2zz4b12p. See general information about how to correct material in RePEc.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Lisa Schiff).

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If references are entirely missing, you can add them using this form.

    If the full references list an item that is present in RePEc, but the system did not link to it, you can help with this form.

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your profile, as there may be some citations waiting for confirmation.

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.