Southwest Washington Regional Transportation Council (RTC) maintains a Regional Traffic Count Program database for Clark County, Washington. This database contains approximately 375 intersections and their traffic count and turn movement volumes. There are also supplemental pages of data such as a list of the highest volume intersections, statistics on Columbia River bridge crossings, and congestion management information.
Traffic count data has been maintained along arterials for the period 1980 to present. Raw count data is collected by local jurisdictions, including Washington State Department of Transportation, Clark County, City of Vancouver, and City of Camas. RTC takes the raw count data and factors the data to represent the average day of the average month. Some intersections are analyzed frequently and have many years of traffic count data. However, many of the intersections have been counted only a few times since 1980.
This data may now be downloaded in its entirety as a compiled HtmlHelp file that will run on any system with Microsoft Internet Explorer 4.01 (or higher) installed. This format (CHM) is the new standard used by Windows 98 and Windows 2000 (NT5) for the help subsystem, and is natively supported on both those platforms. Please note that the download is almost 900Kb, and may take awhile on slower connections.
Traffic count data is summarized for each selected intersection by intersection leg. Directional Average Weekday (24 hour average), AM Peak Hour (7-8 a.m.), PM Peak Hour (peak hour between 4-6 p.m.), and PM Peak Turn Movement (right, left, and through), are included in the summary.
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Click within any one of the dark green grid cells to view a map of just that region, from which you may choose any intersection within it.
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Highest Volume Intersections, 2004
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Your comments on the usefulness and usability of this data, or suggestions to improve it are welcome! For additional information, questions, or comments please contact:
Dale Robins
Regional Transportation Council
1300 Franklin Street, Fourth Floor
       
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