ABOUT
The NW Region Traffic Data Software consists of two major components:  (1) freeway traffic data and (2) data retrieval utilities.  The data and utilities are products collected and maintained by the Washington State Department of Transportation (WSDOT) for the Central Puget Sound Region.  By using any of these products, you agree to the Software License Agreement (please see below).  

FREEWAY TRAFFIC DATA
Data files (YYYYMMDD.DAT) on the WSDOT HTTPS Data Server are grouped by week in compressed archive files named according to the [Week_YYYYMMDD.zip] convention.  For example, data files for the week beginning on Sunday, September 24, 2023 would be stored in the Week_20230924.zip file.  In addition, data files for the current week are contained in the [DATAYYYY] folder in their uncompressed form.  When files are unzipped for use, all files from the same year should reside in a folder named according to the [DATAYYYY] format.  In addition, all yearly folders should reside in the same super-directory.

Note:  Internet browsers may cache the generated web page that contains the list of compressed archive files on the HTTPS site.  This may cause the list to appear out-dated (i.e., lacking the most recent files).  If this seems to be the case, try to refresh the page.

DATA RETRIEVAL UTILITIES
The CDR© utility allows users to retrieve, summarize, and report traffic data from the data files.  A user can access CDR by unzipping the contents of the Tools_CDR.zip file to a local directory on the hard drive, and double-clicking on the CDR.EXE file that is contained in the resultant \CDR directory.  A user may also create a shortcut on the desktop by right-clicking on CDR.EXE and choosing “Send To… desktop.”  Help for this program can be accessed in a number of different ways.

(1)	A user may double-click on the CDR.CHM file in the local \CDR directory. If the help window is blank when opened, make sure all files have been unzipped to a local directory (ie, C:\CDR\).  Then open the file properties window for CDR.CHM and select “Unblock” at the bottom of the General Properties tab.
(2)	A user may also get help in context from within the CDR program itself by pressing F1 or clicking on a “Help” button or “Help” menu command.
(3)	The information contained in CDR.CHM is partially based on an earlier guide (CDRGUIDE.PDF) written by John Ishimaru of TRAC.  The guide requires Adobe Acrobat Reader, and is no longer being maintained nor supported.  It is provided as a reference.
(4)	LoopNamingScheme.pdf & LoopRule.rtf in the \CDR directory include information for defining loop names and station names.  The loop naming rules will help the user match freeway lanes to loop names in CDR.

The CSV command-line data conversion utilities allow users to convert the freeway traffic data files to CSV format.  The Tools_CSV-20S-***.zip compressed archive files contain the executable binaries, the complete code-sets for windows and linux, and the instructions for using these utilities in the command line.

The TRAC FLOW data retrieval utilities are contained in the Tools_TRAC.zip compressed archive file.  In addition to the software listed below, this archive contains tutorials, notes, and workshop slides.

TRAC Program		Function
CDR Auto			Reads and reformats data
CD Analyst			Computes performance measures

SOFTWARE LICENSE AGREEMENT
All NW Region Traffic Data Software program and data components, herein referred to simply as SOFTWARE, remain the intellectual property of the WSDOT, and are provided to you for use free of charge.  By using it you agree to the following: 

1.  You shall not give the SOFTWARE to anyone, sell, rent, or distribute the SOFTWARE. You shall not reverse engineer, decompile or disassemble the SOFTWARE.

2.  You shall hold harmless the State of Washington and WSDOT for any damages of any kind that arise from the use or misuse of the SOFTWARE or the use or misuse of any information that you obtain or fail to obtain through use or misuse of the SOFTWARE.

3.  You acknowledge and accept that WSDOT may at any time and without notice terminate the data stream or data source that is used by the SOFTWARE. And, that in doing so WSDOT will render the SOFTWARE useless. WSDOT is under no obligation to supply data for the SOFTWARE or to maintain or supply the SOFTWARE.

4.  If you are issued a Password, User ID, or phone number, you agree to keep this information secret and not reveal this information to anyone.

5.	WSDOT does not grant you, the user of the SOFTWARE, any rights of any kind, other than the right to attempt to run the SOFTWARE on your computer and attempt to get data from WSDOT.

CONTACT
Christian Cheney, TMS Software Engineer
mailto:  cheneyc@wsdot.wa.gov