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Products
(Project Number)
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Impact on Practice
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Product Status
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Four Pilot Reports documenting independent assessments of the suite of data and analysis tools from the SHRP2 Reliability Program. Updates and revisions to reports, guides, and analytical tools based on feedback from the pilot tests.
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Moved reliability into business practices by testing data collection / integration components, analytical components, and decision making components alongside the suite of data integration and analytical tools developed by SHRP 2 Reliability.
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The reports are in the editorial review process and will be available in the Fall of 2014. Several are available in a pre-published format where noted below.
All updates and revisions to reports, guides, and tools are centralized and located on the following web page:
L38 Product Page
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SHRP 2 Project L38A
Pilot Testing of SHRP 2 Reliability Data and Analytical Products: Southern California Pilot Site
The Southern California site uses the reliability guide from L02, analysis tools for forecasting reliability and estimating impacts from L07, L08, and C11 as well as the guide on reliability performance measures from the L05 product. The Southern California site focused on two freeway facilities: I-210 in Los Angeles County and I-5 in Orange County. Both facilities already have had extensive performance assessments and micro-simulation modeling performed on them, and both had limited reliability analyses conducted. The pilot testing demonstrates that the reliability analysis tools have the potential for modeling reliability impacts but require some modifications before they are ready for use by agencies.
A pre-published pilot report is available here.
SHRP 2 Project L38B
Pilot Testing of SHRP 2 Reliability Data and Analytical Products: Minnesota Pilot Site
The Minnesota site uses the reliability guide from L02, the analysis tool for forecasting reliability and estimating impacts from L07, as well as the guide on reliability performance measures from the L05 product. The Minnesota site focused on two freeway facilities: I-94 from downtown Minneapolis to downtown St. Paul and I-35W from downtown Minneapolis south to Burnsville. Both facilities already have an extensive loop detector network that collects and stores traffic count and speed data on the instrumented system. Corridor, route, and segment travel times are computed from this data for use on DMS and for traveler information. The pilot testing demonstrates that the reliability analysis tools have the potential for modeling reliability impacts but require some modifications before they are ready for use by agencies.
SHRP 2 Project L38C
Pilot Testing of SHRP 2 Reliability Data and Analytical Products: Florida / Miami-Dade Pilot Site
The Florida / Miami-Dade site uses the reliability guide from L02, analysis tools for forecasting reliability and estimating impacts from L07, L08, as well as the guide on reliability performance measures from the L05 product. The Florida / Miami-Dade site focused on the Florida DOT Transportation System Management and Operations (TSM&O) program activities and traffic management center operations in Miami-Dade County and on the I-95 corridor general purpose lanes (GPL)s and express lanes (EL)s in the northbound (NB) and southbound (SB) directions and the SR7/US441 corridor, which is a parallel arterial facility to the I-95 corridor. The pilot testing demonstrates that the reliability analysis tools have the potential for modeling reliability impacts and recommends to their stakeholders that functional areas of trend analyses, predictive analyses, transportation management strategies, decision support systems, and integrated corridor management begin to include a Florida DOT-based modified version of the SHRP 2 reliability analysis tools in the day-to-day processes, standard operating guidelines, and performance reporting systems.
A pre-published pilot report is available here.
SHRP 2 Project L38D
Pilot Testing of SHRP 2 Reliability Data and Analytical Products: Washington Pilot Site
The Washington site uses the reliability guide from L02, analysis tools for forecasting reliability and estimating impacts from L07, L08, and C11 as well as the guide on reliability performance measures from the L05 product. The Washington site focused on the I-5 and I-405 corridors from Lynnwood to Tukwila (approximately 30 miles long for each corridor running through the Puget Sound metropolitan region), and the SR-522 urban arterial near Seattle. The pilot testing demonstrates that the SHRP 2 Reliability data and analytical products clearly address the practical challenges that transportation agencies face when monitoring and analyzing travel time reliability. However, most tools require significant improvements at the application level.
