bikeway design | Transportation Research and Education Center

Reducing Conflicts Between Bicycles and Turning Motor Vehicles

Dec 19, 2024

One of the most common locations for fatal motor vehicle–bicyclist crashes is at intersections. A newly published report offers guidance for improving intersection safety, especially in situations where a bike is traveling straight through an intersection and a car is turning across the cyclist's path.

The objective of the study was to develop guidelines and tools for transportation practitioners to reduce and manage conflicts between bicyclists and drivers turning at signalized intersections.

"Reducing Conflicts Between Turning Motor Vehicles and Bicycles: Decision Tool and Design Guidelines" was funded by the National Cooperative Highway Research Program (NCHRP), a program of the National Academies of Sciences, Engineering, and Medicine. The research was led by Toole Design in partnership with Portland State University (PSU), Safe Streets Research and Consulting (SS) and Oregon State University (OSU). The PSU team members were Chris Monsere, Sirisha Kothuri and Jason Anderson of the Maseeh College of Engineering and Computer Science, and Nathan McNeil of the Transportation Research and Education Center (TREC).

WHAT DID THE RESEARCHERS STUDY?

The research team conducted crash analysis, video-based...

Bikes and Transit Riders Sharing Space: Researchers Evaluate TriMet's New FX2 Bus Platform Design

Oct 23, 2024

Portland State University (PSU) researchers have partnered with TriMet to evaluate the design of a new shared-use bus platform that incorporates a sidewalk-level bike lane. The project, FX2 Shared Bicycle & Pedestrian Platform Evaluation, assessed how well the new design is working for transit riders and other road users along Portland's Southeast Division Street.

The most common bus and bike lane design typically has a bike lane directly adjacent to the right side of the bus lane with no physical barrier. This presents several safety concerns. In this scenario, a bike behind a bus would have to wait behind or pass the bus by riding into traffic. As vulnerable road users, these conflicts pose a potentially serious risk to bicyclists.

The FX2-Division is a Frequent Express (FX) bus line that runs from downtown Portland to Gresham. The transit service began operations in September 2022. To accommodate passing bicyclists and transit riders accessing the new FX2 line, TriMet worked with the City of Portland and a broad group of stakeholders and partners to create a design that would allow bikes to stay separated from automobile traffic, with the bikeway passing through the platform area next to where people wait for the...

IBPI Bikeway Design Workshop Wraps Up Its Fifteenth Year With A Successful Program

Oct 22, 2024

Our annual summer Bikeway Design workshop, offered through the Initiative for Bicycle and Pedestrian Innovation (IBPI), was held last August at Portland State University. Eighteen professionals attended, learning from local active transportation experts on topics including bicycle facility design, traffic engineering techniques that support active travel, and designing for suburban environments. Check out some photos from this year's workshop.

The week-long workshop also included field tours of bicycle infrastructure in Portland and its surrounding communities. The final day of the workshop, students convened in PSU's Engineering Building to confer together about design problems they were currently being challenged by at work, in their home communities.

One of this year's participants was Portlander Aaron Kuehn, the outgoing chair of BikeLoud PDX, a local bike advocacy nonprofit. Inspired by what he learned in the workshop, he wrote a three-part guest post on the popular BikePortland blog, titled "How to Design a Bikeway." The three posts offer an overview of the Bikeway Design workshop and invite readers to participate in imagining their own bikeway solutions.

"I think everyone has a role to play in designing great streets," Kuehn...

Better Block PSU Gives International School of Portland a Neighborhood Makeover

Aug 28, 2024

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Not far from Portland State University, down a little road tucked under three highway overpasses, sits the International School of Portland (ISP)—a leafy four-acre campus serving nearly 400 students from preschool to fifth grade. Despite its proximity to popular pedestrian areas, including the Downtown Waterfront, the International School of Portland is nestled amongst a few private blocks and can be difficult to access by foot or by bike. Naturally, most students arrive by car, which creates the familiar traffic jam at pickup and dropoff times.

To provide more transportation options and give the students more access to the school's surrounding neighborhood, Portland State University students are working to improve walking and biking access to the campus. Championed by ISP’s volunteer Green Team, Facilities Manager...

Denmark Study Abroad Contextualizes Bicycle Infrastructure for Students

Aug 28, 2024

Since 2011, Portland State University and the Initiative for Bicycle and Pedestrian Innovation have offered a unique opportunity to students: a two-week study abroad course that introduces participants to cities with stellar bike cultures. In past years, classes have explored the Netherlands, Sweden, and Denmark. This year’s class of eight students, led by Hau Hagedorn and Drusilla van Hengel, spent two weeks this summer traversing Denmark by public transportation, foot, and (of course) bike. Check out some photos from the trip.

Students came from all over the country—from Portland to Connecticut—to attend the course. What they all had in common was a desire to learn from a city that is renowned to have some of the best bike infrastructure in the world. The students wanted to bring their newfound knowledge back to their respective towns to make the world a safer, happier place for their loved ones and communities.

Ern Tan—the founder of Civic Cincinnati, a grassroots urbanism advocacy group in Ohio—said before the trip that she was looking forward to seeing the promise of a more bikeable future for Cincinnati reflected in...

Creating a Statewide Biking and Walking Database for California

Jul 24, 2024

Knowing how many people use walking and bicycling infrastructure is crucial for transportation planning. Active transportation projects can help cities and states achieve multiple climate- and public-health-related targets, and a new project launching in 2024 can help further those goals: California is getting a statewide active transportation count database.

With help from Portland State University (PSU) researcher Sirisha Kothuri, the Safe Transportation Research and Education Center (SafeTREC) at the University of California, Berkeley is leading an effort to create a centralized data repository for the state.

Kothuri, a senior research associate in civil and environmental engineering at PSU, has led multiple research projects aimed at improving the accuracy and scope of nonmotorized data collection efforts. She has experience with using data fusion techniques to estimate bicycle volumes, leveraging crowdsourced data to derive pedestrian counts, and working with this data to make walking and bicycling safer and more comfortable. Her expertise in this area, as well as PSU's experience centralizing transportation data via the university's PORTAL and BikePed Portal, will...

Transforming the School Commute: PSU Researchers Explore the Impact of Bike Buses

Jan 18, 2024

The trip to and from school is made by nearly every child in Oregon every school day. Bike and walk buses, organized groups of school children, parents, and ride/walk leaders, seek to encourage biking and walking to school. A new research project at Portland State University's Transportation Research and Education Center (TREC) will gather information on bike buses nationwide, inspired by the success of Sam Balto's bike bus initiative at Alameda Elementary School in Portland, Oregon.

Balto, a physical education teacher, catapulted into the limelight in 2022 after establishing a weekly bike bus involving over 100 students commuting to school on two wheels. Its success and popularity prompted a broader initiative to understand and promote the benefits of bike and walk buses across the United States.

Researchers John MacArthur and Nathan McNeil, along with Evan Howington, a student in the Master of Urban and...

PSU Researchers Will Work With PBOT To Evaluate New 122nd Avenue BIL Project

Feb 23, 2023

Portland State University transportation researchers will partner with the Portland Bureau of Transportation (PBOT) to evaluate a new project on 122nd Avenue in Portland, Oregon.

The Bipartisan Infrastructure Law (BIL) established the "Safe Streets and Roads for All" program to provide $5-6 billion in funding to support regional, local, and Tribal initiatives to prevent roadway deaths and serious injuries. On Feb. 1, 2023, U.S. Transportation Secretary Pete Buttigieg announced $800 million in grant awards for 510 communities through the first round of funding for the Safe Streets and Roads for All (SS4A) grant program.

See the full list of awarded projects here.

PBOT was awarded $20 million to make 122nd Avenue safer for all road users, and around $250,000 of that will go toward a research project to evaluate the effectiveness of the new safety treatments. The project will employ low-cost, high-benefit treatments on 5.5 miles of 122nd Avenue in...

Portland Bikeway Design Workshop Expands its Impact Across the Country

Nov 18, 2022

This article is about the 2022 impacts of our IBPI Comprehensive Bikeway Design workshop. See other IBPI trainings, including the faculty workshop "Integrating Bike-Ped Topics Into University Transportation Courses," at our bike/ped training home page.

If you're biking through Cincinnati, Ohio in the next couple of years and find yourself pedaling on a Portland-style neighborhood greenway or two-way protected bike lane, it might be because two engineers from the City of Cincinnati's Department of Transportation & Engineering—Joe Conway and Brian Goubeaux—attended our Comprehensive Bikeway Design Workshop in the summer of 2022 and brought some inspiration home.

The City of Cincinnati is in the process of updating its Bicycle Transportation Plan, adopted in 2010 and due for a refresh. Goubeaux, a senior engineer for the City, said that design strategies and practices he learned during the summer workshop will likely...

Better Block PSU Project Brings Safety Improvements to Hood River Middle School

Oct 26, 2022

Students at Hood River Middle School in Hood River, Oregon, will get some hands-on transportation experience next spring as they participate in the redesign of bike and pedestrian infrastructure around their school. Members of the (tentatively named) "Better Blocks Club," a new after-school extracurricular club, will get the chance to observe infrastructure, go on field trips by bike, learn urban planning best practices, and be involved in implementing a pilot safety project.

They'll be helping to plan and install new pop-up pedestrian and bike facilities at the intersection of May Street and 17th/18th Streets, a dogleg intersection adjacent to their school. The intersection design, which will include a protected intersection near the school and pop-up mobility lanes on the approaching streets, was created by PSU civil engineering students as part of the Better Block PSU program.

After the 6-month pilot demonstration is complete, the project will undergo community feedback and design modifications before infrastructure is permanently installed by the City of Hood River.

Left: Intersection of 17th/May St (Google Street View, 2022). Right: Map of the project location.

HOW DID THIS PROJECT COME ABOUT?

The project is led by Megan Ramey, Hood River County School District's Safe Routes to School...

WHAT DID THE RESEARCHERS STUDY?

HOW DID THIS PROJECT COME ABOUT?

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