United States Department of Transportation
i
Calibration of work zone impact analysis software for Missouri.
-
2013-12-01
[PDF-2.15 MB]
Details:
-
Creators:
-
Corporate Creators:
-
Corporate Contributors:
-
Subject/TRT Terms:
-
Publication/ Report Number:
-
Resource Type:
-
Geographical Coverage:
-
Corporate Publisher:
-
Abstract:This project calibrated two software programs used for estimating the traffic impacts of work zones. The WZ Spreadsheet
and VISSIM programs were recommended in a previous study by the authors. The two programs were calibrated using
field data from two work zones in Missouri. Both work zones involved a single lane closure on a three-lane section of
roadway. The I-44 work zone was a long-term work zone, while the I-70 work zone was temporary, lasting only a few
hours. The capacity values required for calibration were nearly identical for the two programs: 1,575 veh/hr/ln for the WZ
Spreadsheet and 1,514 veh/hr/ln for the VISSIM program. The VISSIM driving behavior parameters CC1, CC2, and SRF
were also computed. The study found that a calibration based on delay or travel time exhibited better overall performance
than a calibration based on queue length. In the future, additional case studies could be added to further calibrate the two
models for different work zone lane configurations, such as a one-lane closure on a two-lane segment or a two-lane closure
on a three-lane segment.
-
Format:
-
Funding:
-
Collection(s):
-
Main Document Checksum:
-
Download URL:
-
File Type:
