AZ_Trans

Analysis of the Operational Impacts of Left-In Left-Out Intersection/Driveway Treatments

Posted by ma3932 on October 1, 2023

Sponsor: City of Scottsdale

PI: Dr. Brendan Russo

Co-PI: Dr. Edward Smaglik

Dates: 10/01/2023-10/31/2024

The City of Scottsdale, Arizona contains numerous examples (approximately 60) of left-in left-out (LILO) treatments at intersections or driveways. An aerial view of a typical LILO treatment in the City of Scottsdale is shown in Figure 1. These treatments are typically applied on arterial roadways with medians and consist of a channelizing island in the median which helps direct vehicles turning left both on to and out of minor… Read more

AZTrans Student Researcher Selected as TRB Minority Student Fellow

Posted by ab3824 on September 29, 2022

Armando Martinez, a current AZTrans undergraduate student researcher, was recently selected to participate in the Transportation Research Board’s Minority Student Fellowship Program during the Annual Meeting in January 2023. Armando is mentored by AZTrans faculty Steven Gehrke and Brendan Russo.

Evaluation of Transportation Safety and Security Barriers in Bicyclist Accessibility

Posted by ab3824 on

Sponsor: U.S. Department of Transportation, Pacific Southwest Region 9 UTC

PI: Steven R. Gehrke

Co-PIs: Brendan J. Russo and Edward J. Smaglik

A continuation of automobile dependence over the past half-century within American cities has resulted in significant public health, environmental, and economic challenges. The further motivation of bicycling as a utilitarian and sustainable travel alternative has been identified as a viable solution to address societal concerns regarding physical inactivity, climate change, and transportation-related inequities. However, to date, a profound… Read more

Development of Instrumented Bikes: Toward Smart Cycling Infrastructure and Maintenance

Posted by ab3824 on

Sponsor: U.S. Department of Transportation, Pacific Southwest Region 9 UTC

PI: Chun-Hsing Ho

Co-PIs: Brendan J. Russo and Steven R. Gehrke

Project Report: https://www.metrans.org/assets/research/psr%20final%20report%20nau%20instrumented%20bike%20revised%2011252022.docx.pdf

This research project developed an instrumented bike with a sensor logger, a video device (e.g., GoPro), a mobile app, and a cloud server/website to detect real-time quality of cycling infrastructure systems (bike trails, sidewalks, pedestrian pathways, etc.). The instrumented bike is capable of immediately sharing the information with cyclists (road users) and governments/authorities… Read more

Evaluation of Sidewalk Autonomous Delivery Robot Interactions with Pedestrians and Bicyclists

Posted by ab3824 on

Sponsor: U.S. Department of Transportation, Pacific Southwest Region 9 UTC

PI: Steven R. Gehrke

Co-PIs: Edward J. Smaglik and Brendan J. Russo

Project Report: https://www.metrans.org/assets/research/psr_finalreport_21-16.pdf

Information and communication technology advancements and an increased demand for contactless deliveries after the Covid-19 pandemic outbreak resulted in the growing adoption of automated delivery services. Across university campuses, the deployment of sidewalk autonomous delivery robots (SADRs) has provided students, staff, and faculty a convenient last-mile delivery option. However, SADRs traverse campuses… Read more

Analysis of the Safety Impacts of the Left-In Left-Out Median Opening Treatment at Intersections/Driveways

Posted by ma3932 on November 30, 2021

Sponsor: City of Scottsdale

PI: Dr. Brendan Russo

Dates: 01/01/2021-11/30/2021

Project Report:
https://www.scottsdaleaz.gov/Assets/ScottsdaleAZ/Transportation/Analysis+Left+In+Left+Out+-+2021.pdf

Over the past few decades the City of Scottsdale, Arizona has installed left-in/left-out (LILO) median opening treatments at approximately sixty intersections/driveways; typically at three-leg intersections or driveways on arterials with medians where the minor leg is stop-controlled. The treatment is relatively unique and consists of a channelizing island with an acceleration length provided for vehicles turning left out of the minor road (these left-turning vehicles then merge with major… Read more

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