Details:

Creators:
Scherer, William T. ; Smith, Brian L., 1967-
Scherer, William T. ; Smith, Brian L., 1967- Less -
Corporate Contributors:
National ITS Implementation Research Center (Va.) ; University of Virginia. Center for Transportation Studies
National ITS Implementation Research Center (Va.) ; University of Virginia. Center for Transportation Studies Less -
Subject/TRT Terms:
[+]
Cluster Analysis Data Mining Progressive Traffic Signal Control Traffic Signal Control Systems Traffic Signal Intervals Traffic Signal Timing
Publication/ Report Number:
UVA-CE-ITS-02-6
Resource Type:
Research Paper
NTL Classification:
NTL-OPERATIONS AND TRAFFIC CONTROLS-OPERATIONS AND TRAFFIC CONTROLS
Abstract:
Intelligent transportation systems (ITS) include large numbers of traffic sensors that collect enormous quantities of data. The data provided by ITS is necessary for advanced forms of control; however, basic forms of control, primarily time-of-day (TOD) which are prevalent in the United States do not directly rely on the data. Thus sensor data is typically unused and discarded in this country. The sensor data is in fact capable of providing abundant amounts of information that can aid in the development of improved TOD signal timing plans by providing historical data for automatic plan development and TOD interval identification. Data mining tools are necessary to extract the information necessary from the data to improve on timing plan development and in turn would allow the timing plan development and monitoring process to be automated rather than the time-consuming, intuition based practice currently implemented. This project describes research investigating the application of data mining tools, including statistical clustering techniques, to aid in the development of traffic signal timing plans. Specifically, a case study was conducted to illustrate that the use of hierarchical cluster analysis can be used to automatically identify temporal interval break points, based on the data, that support the design of a time-of-day (TOD) signal control system. The cluster analysis approach was able to utilize a high-resolution system state definition that takes full advantage of the extensive set of sensors deployed in a traffic signal system. Timing plans were developed based on the clustering results, providing enhanced TOD intervals and peak volumes, which were then tested through simulation and internal cluster validation, which proved that the use of data mining tools for plan development is beneficial. The results of this research indicate that advanced data mining techniques hold high potential to provide automated techniques to assist traffic engineers in signal control system design, development and operations, the entire process of plan development that is currently practiced based on hand-counted volumes and single intersection TOD intervals.
Format:
PDF
Collection(s):
US Transportation Collection
Main Document Checksum:
[+]
urn:sha256:75540a02fdcfbf4df74f639f92bd5a8354c82918149ea8ab1d362f977c8bb8f9
Download URL:
https://rosap.ntl.bts.gov/view/dot/5455/dot_5455_DS1.pdf
File Type:

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