45 Results

Subcontract: NCHRP 15-73 Design Options to Reduce Turning Motor Vehicle – Bicycle Conflicts at Controlled Intersections

Christopher Monsere
Sirisha Kothuri , Nathan McNeil
BACKGROUND One of the most common locations for fatal motor vehicle-bicyclist crashes is at intersections, which inherently have a large number of turning conflicts. Reducing these conflicts is a key objective in improving intersection safety acr ... Read More

Subcontract: NCHRP 15-74 Safety Evaluation of On-Street Bicycle Facility Design Features

Christopher Monsere
Sirisha Kothuri
https://apps.trb.org/cmsfeed/TRBNetProjectDisplay.asp?ProjectID=4763 BACKGROUND While non-separated on-street bicycle facilities have been used in the United States for many years, separated on-street bicycle facilities are becoming increasing ... Read More

Marginalized Populations’ Access to Transit: Journeys from Home and Work to Transit

Marisa Zapata
Ivis Garcia , Amy Lubitow , Miriam Abelson
Research demonstrates that marginalized populations experience significant barriers in accessing transit. Much research related to marginalized populations focuses on fares, costs, and locations to utilizing transit. More recent studies look at how t ... Read More

Pedestrian Behavior Study to Advance Pedestrian Safety in Smart Transportation Systems Using Innovative LIDAR Sensors

Taylor Li
Sirisha Kothuri , Xianfeng Yang
Pedestrian safety is critical to improving walkability. Although walking trips have increased in the last decade, pedestrian safety remains a top concern. In 2018, 6,283 pedestrians were killed in traffic crashes representing the most deaths since 19 ... Read More

Evaluation of Road User Comprehension and Compliance with Red Colored Transit Priority Lanes

Christopher Monsere
Jennifer Dill , Nathan McNeil
As part of the City of Portland Enhanced Transit Corridors Plan, the Portland Bureau of Transportation (PBOT) is working with TriMet and Jacobs Engineering to evaluate the impact of red colored transit priority lanes at key locations in and around do ... Read More

Data-Driven Mobility Strategies for Multi-Modal Transportation

Yao-Jan Wu
Xianfeng Yang , Sirisha Kothuri
By using various modes (e.g., walking, cycling, automobile, public transit, etc.), multi-modal transportation systems are effective in increasing people’s travel flexibility and reducing congestion. Hence, it is critical to understand how roadway s ... Read More

Evaluation of Portland Shared E-Scooter Pilot Program Goals and Outcomes

John MacArthur
Jennifer Dill
Shared electric scooters (e-scooters) are fast becoming a mobility option across the U.S. Many cities are permitting their operation, in part, as a way to provide another option to driving private cars. This could reduce private vehicle miles travell ... Read More

Effect of Residential Street Speed Limit Reduction from 25 to 20 mi/hr on Driving Speeds in Portland, Oregon

Christopher Monsere
Sirisha Kothuri , Jason Anderson
In 2015, the City of Portland adopted Vision Zero's objective of eliminating transportationrelated fatalities and serious injuries. Speed, through analysis of crash data, was determined to be a contributing factor in 47% of the fatal crashes observed ... Read More

Subcontract: NCHRP 17-87 Enhancing Pedestrian Volume Estimation and Developing HCM Pedestrian Methodologies for Safe and Sustainable Communities

Christopher Monsere
Sirisha Kothuri , Nathan McNeil
Portland State University is a subcontractor on NCHRP 17-87 award to Kittelson & Associates, Inc. BACKGROUND In 2015, 5,376 pedestrians were killed and an estimated 70,000 were injured in traffic crashes in the United States (Traffic Safety Fac ... Read More

S.T.E.A.M. TRAINing: Engaging High School Girls in Transportation and Equity Issues through GIS

Randy Morris
Nancee Hunter
The Institute of Portland Metropolitan Studies’ Community Geography program wishes to apply for a grant to develop the curriculum for a 1-2 week lab course in transportation-focused mapping and Geographic Information Systems (GIS), to be held in th ... Read More

Road User Understanding of Bicycle Signal Faces on Traffic Signals

Christopher Monsere
Sirisha Kothuri
Bicycling is increasing in the United States – the number of trips made by bicycle more than doubled from 1.7 billion trips in 2001 to 4 billion in 2009 (NHTS, 2009). With the increase in bicycling rates, there is a critical need for cycling infras ... Read More

Effects of Earthquake-Induced Liquefaction on Bridge Foundations and Transportation Network Using CDSS

Arash Khosravifar
A magnitude 9.0 earthquake by the Cascadia Subduction Zone (CSZ) is believed to be capable of causing widespread soil liquefaction in the Pacific Northwest (PACNW). Affected infrastructures include highway bridges specifically the ones crossing the C ... Read More
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