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118126-Thumbnail Image.png
Created2016-07
Description
The Arizona Department of Transportation (ADOT) Roadway Departure Safety Implementation Plan (RDSIP) has identified tree removal as a feasible countermeasure to reduce roadway departure crash frequency or severity. Previous ADOT work has identified locations for tree removal, and activities to conduct this work are underway. To test the safety effectiveness

The Arizona Department of Transportation (ADOT) Roadway Departure Safety Implementation Plan (RDSIP) has identified tree removal as a feasible countermeasure to reduce roadway departure crash frequency or severity. Previous ADOT work has identified locations for tree removal, and activities to conduct this work are underway. To test the safety effectiveness of removing the trees, ADOT intends to conduct statistically rigorous before-after safety effectiveness analysis to estimate state-specific crash modification factors (CMFs).
118127-Thumbnail Image.png
Created2015-05
Description
Windblown dust events occur in Arizona, and blowing dust has been considered a contributing factor to serious crashes on ... Arizona roadways.... [T]he Arizona Department of Transportation (ADOT) acquires information about predicted or in-progress dust events through National Weather Service forecasts and advisories and through field reports from motorists and

Windblown dust events occur in Arizona, and blowing dust has been considered a contributing factor to serious crashes on ... Arizona roadways.... [T]he Arizona Department of Transportation (ADOT) acquires information about predicted or in-progress dust events through National Weather Service forecasts and advisories and through field reports from motorists and ADOT personnel. ADOT then communicates this information to the public.... During this project, researchers developed a set of recommendations that ADOT can implement to identify the most effective means for acquiring data about windblown dust events, communicating ... to the public, and influencing driver behavior....--Page v.
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Created2014-06
Description

Planning to Programming Link development started with ADOT's multimodal visioning called "Building a Quality Arizona" (bqAZ), the 2010 Statewide Transportation Planning Framework Study created a fiscally-unconstrained vision for the state's transportation system in 2050. bqAZ led to "What Moves You Arizona?," the state's Long-Range Transportation Plan 2010-2035, which applied financial

Planning to Programming Link development started with ADOT's multimodal visioning called "Building a Quality Arizona" (bqAZ), the 2010 Statewide Transportation Planning Framework Study created a fiscally-unconstrained vision for the state's transportation system in 2050. bqAZ led to "What Moves You Arizona?," the state's Long-Range Transportation Plan 2010-2035, which applied financial constraint to the vision, identifying anticipated revenues and providing a recommended investment choice (RIC) that indicates how revenues will be allocated to four different investment types: preservation, expansion, modernization, and non-highway. The third step, and subject of this report, is "Linking the Long-Range Plan and Capital Improvement Program," or P2P Link, which focuses on how ADOT and its primary business partners, the Federal Highway Administration (FHWA), Metropolitan Planning Organizations (MPOs), and Councils of Governments (COGs), fund, build, maintain and operate the transportation system.

ContributorsArizona. Department of Transportation (Issuing body) / Jacobs Engineering Group (Publisher)
Created2015-02
Description

Project Summary

Passing and climbing lanes provide additional lanes for vehicles to safely pass other vehicles while maintaining speeds. Implementing passing and climbing lane projects provides traffic operational and safety benefits at a cost that is far less than fully widening a highway. In an effort to enhance safety and mobility

Project Summary

Passing and climbing lanes provide additional lanes for vehicles to safely pass other vehicles while maintaining speeds. Implementing passing and climbing lane projects provides traffic operational and safety benefits at a cost that is far less than fully widening a highway. In an effort to enhance safety and mobility on Arizona's roadways, the Arizona Department of Transportation is currently updating the 2003 Passing and Climbing Lanes Prioritization Study. This update intends to further refine the identification and prioritization methodology previously utilized and to develop a prioritized list of candidate locations that would provide the most benefit to the traveling public.
Study Objectives

    Review previous studies and research current best practices.
    Analyze the safety and performance benefits of passing/climbing lanes constructed since the previous study.
    Develop a revised methodology and ranking criteria.
    Obtain feedback from ADOT District Engineers and other stakeholders, such as rural COGs and MPOs.
    Develop a new prioritized list of candidate passing/climbing lane projects.