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trecpdx.bsky.social
TREC at PSU
@trecpdx.bsky.social
6K followers 5K following 420 posts
Portland State University's Transportation Research and Education Center (TREC). Home to the Initiative for Bicycle and Pedestrian Innovation (IBPI), transportation data programs PORTAL & BikePed Portal, Better Block PSU, and PSU's membership in PacTrans.
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trecpdx.bsky.social
#BikePedPortal, the non-motorized data archive housed at Portland State, provides a centralized standard bicycle/pedestrian count database which includes automated and manual counts from across the country, along with a suite of custom tools and products. Learn more: trec.pdx.edu/news/learn-h...
Screenshot from BikePed Portal showing data and a photo of bikes
November 18, 2025 at 7:01 PM
Reposted by TREC at PSU
americawalks.bsky.social
How do walkability and public transit go together? 🤔🚌👟 Well, in many cities both big and small, transit is the middle leg of a walking trip!

Learn more: buff.ly/wCy3KyY #ActivePeople
November 18, 2025 at 6:15 PM
trecpdx.bsky.social
Reproducibility is fundamental to the scientific process.

This Friday, join us at PSU as Liming Wang shares a comprehensive, data-driven understanding of the current state of reproducibility & open science practices in transportation research: trec.pdx.edu/events/psu-t...
JOIN US THIS FRIDAY ONLINE OR IN PERSON, With: Liming Wang Nov 14, 2025 11 AM (Pacific) PSU TRANSPORTATION SEMINAR Assessing Reproducibility in Transportation Research with Large Language Models
November 17, 2025 at 8:53 PM
trecpdx.bsky.social
As always, if you weren't able to catch today's Transportation Seminar in person, you can see a recording & copies of the slide decks in our events archive: trec.pdx.edu/events/archive

Thanks to Brendon Haggerty & Matthew Bozigar for a great presentation, and we hope you all have a nice weekend!
trecpdx.bsky.social TREC at PSU @trecpdx.bsky.social · 5d
Today at 11, learn about the impacts of urban road noise at the Portland State University transportation seminar:
trecpdx.bsky.social TREC at PSU @trecpdx.bsky.social · 9d
Health impacts of high noise exposure include cognitive impairment, mental health disorders, high blood pressure, cardio/metabolic problems, hearing loss & adverse pregnancy outcomes. @multco.bsky.social & @oregonstate.edu measured PDX noise levels. Learn more on Friday: trec.pdx.edu/events/psu-t...
November 14, 2025 at 11:34 PM
Reposted by TREC at PSU
trb.org
Serve as a Transportation Research Record (TRR) handling #editor. This vitally important volunteer role ensures a thorough peer review process and recommends what is published.

https://ow.ly/cJ8T50Xo6Au
November 14, 2025 at 1:05 PM
trecpdx.bsky.social
Today at 11, learn about the impacts of urban road noise at the Portland State University transportation seminar:
trecpdx.bsky.social TREC at PSU @trecpdx.bsky.social · 9d
Health impacts of high noise exposure include cognitive impairment, mental health disorders, high blood pressure, cardio/metabolic problems, hearing loss & adverse pregnancy outcomes. @multco.bsky.social & @oregonstate.edu measured PDX noise levels. Learn more on Friday: trec.pdx.edu/events/psu-t...
JOIN US THIS FRIDAY ONLINE OR IN PERSON
November 14, 2025 at 5:36 PM
Reposted by TREC at PSU
apta-info.bsky.social
Today we are celebrating National #TransitCareer Day! More than 437,000 Americans work for public transportation agencies and the industry supports millions of private sector jobs across the United States.
November 13, 2025 at 3:25 PM
Reposted by TREC at PSU
theoverheadwire.com
New #TalkingHeadways podcast! Cortni Desir of the Connecticut Department of Transportation joins the show. link.theoverheadwire.com/q6pwe New bus stops, rider experience, and the importance of curiosity. @usa.streetsblog.org
Talking Headways Podcast: How Can Transit Agencies Help Homeless Residents? — Streetsblog USA
Talking Headways spoke with Cortni Desir of the Connecticut Department of Transportation about buses, curiosity, and homelessness.
link.theoverheadwire.com
November 13, 2025 at 9:05 PM
trecpdx.bsky.social
#TBT to an oldie but a goodie: Our 2020 study with
@peopleforbikes.bsky.social calculated the economic outcomes that bike lanes & walking infrastructure can produce for cities.

Food service sales? Retail? Employment? Most 💲 were impacted positively, or not at all. trec.pdx.edu/news/study-f...
RESULTS SUMMARY: NATIONAL STREET IMPROVEMENT STUDY KEY FINDINGS While growth in retail employment and sales revenue was observed in the years following the construction of the protected bike lane on Massachusetts Avenue, we are unable to calculate pre- and post-construction growth rates due to zero retail employment in some of the years. However, the DID and ITS approaches both indicate that the bike lane installation did not significantly impact retail employment, either positively or negatively, along this corridor. Retail employment increased: The ITS approach shows a positive growth trend from the bike lane construction using LEHD data and QCEW wages data. No causal impact of bike lane construction on retail employment. The corridor saw a dramatic jump in retail sales immediately after bike lane installation, indicating a positive impact of bike lanes on retail sales. However, the great jump could also be related to other one-time changes, such as a large new store opening. Further investigation needed. All three approaches indicate a significant positive impact on retail sales in the improvement corridor. Retail employment and total wages in the retail sector appear to be growing at a faster pace in the improvement corridor, possibly indicating a shift in the type of retail businesses in the area. However, evidence from the ITS approach shows a statistically non-significant causal relationship between bike lane installation and employment growth. LEHD data analysis shows increase of retail service employment, but the ITS approach suggests that this increase is because of economic growth in the region and not because of the street improvement. Retail service-related sales dropped while restaurant sales grew. We suspect a shift from retail business toward more food service businesses after the street improvement. Given mixed results, analysis was inconclusive. Madison performed worse than two of the three control corridors and worse than city-wide, indicating that the street improvement on Madison may have had a negative impact on retail employment. Contradictory data patterns: Some sources show increase in retail sales and employment, but results are not conclusive. Bike lane installation did not significantly impact retail employment, either positively or negatively. Significant positive impact on food services employment following protected bike lane construction, indicating an improvement in business vitality. Food services employment growth significantly outpaced growth in Indianapolis as a whole. Dramatic increase in restaurant sales, along with increase in food service employment following installation (confirmed by both trend analysis and the ITS approach). Positive and significant impact of bike lane installation on food employment. Food service employment increased gradually after the street improvements. Food employment greatly increased two years after bike lane installation, exceeding the growth rate of both the control corridor and greater city trends. Restaurant sales increased and food service employment grew, but rigorous econometric approaches indicate that these increases may not be caused directly by the street improvement on this corridor. Given mixed results, the analysis was inconclusive. Significant positive impact on food employment: After bike lane installation, food employment dropped significantly in level, but dramatically recovered & surpassed previous levels over the next two years. Strong positive impact on food employment, supported by the aggregated trend analysis and ITS estimation results across both the LEHD and QCEW employment data sources. The corridor shows significant and substantial growth in all food service industry metrics—employment, sales, and wages—indicating a positive effect on business vitality following the street improvements.
November 13, 2025 at 6:59 PM
trecpdx.bsky.social
"What’s in print, on our TVs, and shared on social media informs decision-making and shapes perceptions."

Thoughtful piece on messaging from @smartgrowthusa.bsky.social
pedbikeinfo.bsky.social Pedestrian and Bicycle Information Center @pedbikeinfo.bsky.social · 7d
A new feature from @smartgrowthusa.bsky.social challenges how we talk about roadway safety. Too often, coverage focuses on isolated crashes instead of the systems and policies that shape them. Shares 5 things we can strive for to tell a fuller story: www.smartgrowthamerica.org/knowledge-hu...
Ending the pedestrian safety crisis begins with how we talk about it - Smart Growth America
www.smartgrowthamerica.org
November 12, 2025 at 9:01 PM
Reposted by TREC at PSU
trb.org
It's here! Find exactly what you'll attend at #TRBAM in the program with full descriptions of more than 250 lectern sessions, poster sessions, and workshops, covering all transportation modes. Filter by subject or search by keyword, to build your personal itinerary.
https://ow.ly/bJUQ50XkwI9
November 12, 2025 at 8:07 PM
trecpdx.bsky.social
Four planning students, one engineering student, and one working toward a masters of public administration – meet six future transportation professionals now studying at PSU!

We're proud to celebrate these six scholarship winners for the 2025/26 academic year: trec.pdx.edu/news/meet-20...
Headshots of Grace Alston, Jesus Mendoza, Elias Peters, Gabriel Quiñones-Zambrana, Zoe Beckley and Niklas Roethig
November 12, 2025 at 7:48 PM
trecpdx.bsky.social
Health impacts of high noise exposure include cognitive impairment, mental health disorders, high blood pressure, cardio/metabolic problems, hearing loss & adverse pregnancy outcomes. @multco.bsky.social & @oregonstate.edu measured PDX noise levels. Learn more on Friday: trec.pdx.edu/events/psu-t...
JOIN US THIS FRIDAY ONLINE OR IN PERSON
November 10, 2025 at 6:22 PM
Reposted by TREC at PSU
americawalks.bsky.social
How can we design communities to be activity-friendly for all? 🤔

By prioritizing sidewalks, trails, parks, public transit, and other infrastructure to facilitate walking, biking, rolling, and more!

Learn more: buff.ly/rbADK86 #ActivePeople
Strategies for Physical Activity Through Community Design
Strategies for state and local groups to increase physical activity through community design.
buff.ly
November 7, 2025 at 4:15 PM
trecpdx.bsky.social
How do you build a dataset that works for 48+ local agencies?

Today, Ben Stabler and Theresa Conley shared some key lessons from an ambitious statewide multimodal data effort. Miss it? The recording's available now: youtu.be/fD0nghrJARk
PSU Transportation Seminar: Building Oregon's Statewide Multimodal Transportation Inventory
YouTube video by Transportation Research & Education Center at PSU
youtu.be
November 7, 2025 at 9:24 PM
trecpdx.bsky.social
#TBT to our 2020 study that busted a myth: Cyclists don't slow down cars on neighborhood streets.

The difference in car speeds with & without a bicycle present was less than 1 mph.

This evidence supports the design of safe street networks like neighborhood greenways: trec.pdx.edu/news/do-bicy...
A bike boulevard in Portland, OR. Cars share the road with cyclists.
November 6, 2025 at 7:33 PM
trecpdx.bsky.social
The @oregondot.bsky.social and 48+ local agencies are collaborating on the development of a multimodal data set for transportation planning within metropolitan areas.

Learn more tomorrow at PSU (or watch online): trec.pdx.edu/events/psu-t...
With: Ben Stabler (DKS) and Theresa Conley (ODOT) Nov 7, 2025 11 AM (Pacific) JOIN US THIS FRIDAY ONLINE OR IN PERSON PSU TRANSPORTATION SEMINAR Building Oregon's Statewide Multimodal Transportation Inventory with AI and Interagency Collaboration
November 6, 2025 at 6:33 PM
Reposted by TREC at PSU
pbotinfo.bsky.social
The rain is here Portland, and it's the perfect time to brush up on your winter biking skills! Join PBOT's Portland By Cycle team for an All Season Cycling workshop this Friday, Nov. 7 from 3 - 5 p.m. at Woodstock Library.

@multcolib.bsky.social
A pink event flyer says Ride Through the Seasons 2025. Text in a box reads, "Join us! Nov. 7, All Season Cycling Workshop". A drawing of someone riding a bike in the rain is overlayed on top.
November 5, 2025 at 12:58 AM
trecpdx.bsky.social
Interesting case study of an on-demand microtransit service that launched as a demonstration project in 2021 to serve rural and Tribal communities in eastern Oklahoma:
sharedusecenter.bsky.social Shared-Use Mobility Center @sharedusecenter.bsky.social · 14d
Pelivan Transit & partners have grown PICK Transportation from a pilot into a lasting microtransit network serving rural & Tribal communities across Oklahoma.

Learn how PICK connects riders to jobs, healthcare, and more in our new case study: tinyurl.com/yw9668ba
November 4, 2025 at 11:11 PM
trecpdx.bsky.social
We've added Explore + to our #BikePedPortal – a robust dashboard that allows users to conduct a wide range of data analyses.

Read more about how BikePed Portal can help transportation practitioners do their jobs: trec.pdx.edu/news/learn-h...

Watch an Explore + Tutorial:
youtu.be/mHpgll7ZA6g
BikePed Portal Explore + Tutorial
YouTube video by Transportation Research & Education Center at PSU
youtu.be
November 4, 2025 at 8:16 PM
trecpdx.bsky.social
"Storywork: The Prints of Marie Watt" is on exhibit through Dec 6 at PSU's Jordan Schnitzer Museum of Art.

Stop by any Friday this month (except Thanksgiving) to see the free exhibit before or after our Friday Transportation Seminar in the same building.

This Friday: trec.pdx.edu/events/psu-t...
With: Jason Anderson and Sirisha Kothuri, PSU Oct 31, 2025 11 AM (Pacific) JOIN US THIS FRIDAY ONLINE OR IN PERSON PSU TRANSPORTATION SEMINAR Building Oregon's Statewide Multimodal Transportation Inventory with AI and Interagency Collaboration Marie Watt, Vivid Dream (Liberty), 2023, photogravure on gampi with calico fabric, collage, string, silver leaf, 31 1/2 x 19 inches Sheet
November 3, 2025 at 10:11 PM
Reposted by TREC at PSU
pedbikeinfo.bsky.social
New guide from American Trails helps show the impact of trails and recreation in communities, with tips and templates to help small and volunteer-led groups collect data and share the benefits of outdoor recreation. www.americantrails.org/resources/a-...
A Do-It-Yourself Guide: Conducting Visitor and Recreational User Research to Tell an Economic Story - American Trails
Connecting and transforming communities through the power of trails.
www.americantrails.org
November 3, 2025 at 8:26 PM
Reposted by TREC at PSU
visionzeronet.bsky.social
Thoughtful street design can make cities safe and more inclusive for children. 🌎 Join Eduarda Aun from the Global Designing Cities Initiative TOMORROW at 12pm ET to learn how communities worldwide are reimagining streets for all ages.

Register now: yse.to/hixonnov4
November 3, 2025 at 9:00 PM
Reposted by TREC at PSU
pbotinfo.bsky.social
Stay safe this Halloween, Portland!

As the days grow darker and trick-or-treaters fill neighborhood streets, PBOT urges everyone to slow down, stay alert, and look out for people walking, biking, and rolling: www.portland.gov/transportati...
News release: Travel with caution as Halloween trick-or-treaters and rainy weather add safety risks to city streets
The Portland Bureau of Transportation (PBOT) urges everyone traveling — whether walking, biking, rolling, taking transit, or driving — to use extra care to help keep Portlanders of all ages safe this ...
www.portland.gov
October 30, 2025 at 11:43 PM
trecpdx.bsky.social
Tomorrow, Jason Anderson & Sirisha Kothuri of @maseehcollege.bsky.social will share guidance and tools for transportation practitioners to reduce turning conflicts between motor vehicles and bicycles at controlled intersections.

Join us online or in person: trec.pdx.edu/events/psu-t...
With: Jason Anderson and Sirisha Kothuri, PSU Oct 31, 2025 11 AM (Pacific) JOIN US TOMORROW ONLINE OR IN PERSON PSU TRANSPORTATION SEMINAR Reducing Motor Vehicle – Bicycle Conflicts at Controlled Intersections
October 30, 2025 at 7:03 PM