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Posts Tagged ‘SHRP’

Portland Metro: How Much Travel-Time Reliability Matters

Friday, February 27th, 2015
Figure 1.1. Overall model framework.

TRANSPORTATION RESEARCH BOARD
More than 10 scenarios were identified and modeled in this project. The analysis results indicate that both bus rapid transit and variable message signs contribute to improved reliability for the Southwest Corridor when the performance over multiple modes and facilities is being considered. Bus rapid transit contributes to improved corridor performance by increased ridership due to higher reliability, and variable message signs contribute to improved corridor reliability by balancing the arterial and freeway flow via information dissemination.

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Posted in Infra Views, Local, Public Transportation, Transit

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When to Use Existing Pavement in Highway Maintenance

Tuesday, August 12th, 2014
Photo of 35-year-old unbonded PCC overlay on I-90.

THE SECOND STRATEGIC HIGHWAY RESEARCH PROGRAM (SHRP 2)
This report documents the findings from the second Strategic Highway Research Program (SHRP 2) R23 project, Using Existing Pavement in Place and Achieving Long Life. This project falls within the SHRP 2 Renewal area, which focuses on improving the ability of highway agencies to design and construct long-lasting highway projects with minimal disruption to the traveling public. The project found that construction costs and time can be greatly reduced if the existing pavement can be used in place for part of the rehabilitation solution.

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