Lightnews — Scholar-powered news

UC Berkeley SafeTREC @ucberkeleysafetrec.bsky.social · 9h

"How we design our streets plays a critical role in how fast vehicles go, who can safely access our roads, how people get around, and influences who lives and who dies," Global Designing Cities Initiative's Skye Duncan in:
www.forbes.com/sites/tanyam... #SafeSpeeds #RoadDesign #SafeSystem

New Street Design Guide Aims To Help Lower Global Deaths From Speeding

A new guide hopes to help communities reduce road deaths and lessen the severity and impact of serious injuries caused by speed by integrating safer street design.

www.forbes.com

Reposted by UC Berkeley SafeTREC

UC Berkeley ITS @berkeleyits.bsky.social · 1d

ITS postdoc Cheng-Kai Hsu and SALURBAL researchers studied heat-related road traffic deaths in Latin America. The research analyzed temperature and traffic fatality data across 272 cities in 6 countries—Brazil, Mexico, Chile, El Salvador, Panama, and Costa Rica. its.berkeley.edu/news/rising-...

1 1

UC Berkeley SafeTREC @ucberkeleysafetrec.bsky.social · 1d

Great to see SafeTREC's Sujin Lee & Julia Griswold presenting their winning research project at the INRIX + @metrolabnetwork.bsky.social 2025 Student Showcase! ICYMI
access the on demand recording here: inrix.com/resources/on... #UrbanMobility #Transportation #Safety #Innovation

SafeTREC postdoctoral scholar Sujin Lee facing the camera on the left, with SafeTREC director Julia Griswold on the right, captured during the webinar.

1

UC Berkeley SafeTREC @ucberkeleysafetrec.bsky.social · 2d

According to new city data, the @sfmta.bsky.social reports that speeding has decreased by an average of 72% at 15 camera locations: localnewsmatters.org/2025/10/07/s... #SpeedManagement #RoadSafety

SFMTA finds new cameras cut speeding 72% at 15 sites, spurring changed driver behavior - Local News Matters

San Francisco’s new speed camera program, the first of its kind in California, has led to a sharp drop in dangerous driving, according to new city data.

localnewsmatters.org

Reposted by UC Berkeley SafeTREC

Pedestrian and Bicycle Information Center @pedbikeinfo.bsky.social · 10d

New research you can put to work: Center for Pedestrian & Bicyclist Safety (CPBS) Y1 completed projects support safer walking & biking.
Highlights: vehicle design & pedestrian safety, context-sensitive speed limits, & arterial road characteristics & crashes.
www.pedbikesafety.org/completed-pr...

Completed Projects | CPBS

Project details and deliverables for completed CPBS projects.

www.pedbikesafety.org

3 6

UC Berkeley SafeTREC @ucberkeleysafetrec.bsky.social · 3d

October 8th is 2025 National #WalkRolltoSchoolDay! Learn more about how to get involved and join the communities celebrating safe, active travel to school for all...tomorrow and all year long: www.walkbiketoschool.org #PedestrianSafetyMonth #Walk #Bike

Group photo of parents, caregivers, students, staff walking, biking and rolling in Caesar Rodney School District and featured on the https://www.walkbiketoschool.org/ website (Photo credit: AB Corson)

UC Berkeley SafeTREC @ucberkeleysafetrec.bsky.social · 3d

Still time to register for tomorrow's INRIX + MetroLab 2025 Student Showcase webinar at 11am PT highlighting #Research from @ucberkeleyofficial.bsky.social, University of New Mexico, Utah State University & Columbia University! #UrbanMobility #Transportation #Safety #Innovation

UC Berkeley SafeTREC @ucberkeleysafetrec.bsky.social · 8d

SafeTREC's Sujin Lee will present @ucberkeleyofficial.bsky.social's winning INRIX + MetroLab 2025 project in the October 8th student showcase - register now to learn how 4 of the 12 university finalists are transforming complex transportation data into actionable insights: inrix.com/learn/talk-w...

Metrolab Student Showcase

INRIX helps cities and businesses use big data to identify and solve transportation problems, making the world safer, happier and greener.

inrix.com

UC Berkeley SafeTREC @ucberkeleysafetrec.bsky.social · 4d

Join the SafeTREC team as Program Coordinator! This position supports our community engagement portfolio, including the Community Pedestrian and Bicycle Safety Program, California Safe System Leadership Institute, and other special projects. Learn more on how to apply: bit.ly/ProgramCoord...

A green megaphone on a medium blue background to the left with
"We're hiring!" in white text to the right.

2 4

Reposted by UC Berkeley SafeTREC

National Complete Streets Coalition @completestreets.bsky.social · 7d

There's still time to take part in #WeekWithoutDriving! How will you choose to move? 👟🚲🚍

Learn more about how our friends in Nashville are using their strong #CompleteStreets policy to make positive changes ➡️ bit.ly/nashville-be...

1 3 4

UC Berkeley SafeTREC @ucberkeleysafetrec.bsky.social · 7d

Learn more about best practices for nighttime visibility safety in the FHWA 10/16 webinar on rural intersection lighting and innovative policy applications w/speakers from MnDOT and Caltrans: vhb.zoom.us/webinar/regi...
#PedestrianSafetyMonth

UC Berkeley SafeTREC @ucberkeleysafetrec.bsky.social · 7d

DYK that the nighttime fatality rate on U.S. roadways is three times higher than the daytime rate, and 76% of pedestrian fatalities occur at night? Visit the FHWA for more nighttime visibility for safety resources: www.fhwa.dot.gov/innovation/e... #PedestrianSafetyMonth

Three images from the FHWA showing from left to right a pedestrian exiting a crosswalk, lighting on a road at nighttime, and a truck on a rural road.

1 1

Reposted by UC Berkeley SafeTREC

Vision Zero Network @visionzeronet.bsky.social · 7d

Save the Date for our Oct 23 Webinar: Mapping What Matters for Pedestrian Safety. You'll learn how Ecopia AI’s mapping tech & Rhode Island planners are using high-precision data to build safe, healthy communities.

Register today: visionzeronetwork.org/upcoming-web...

Mapping What Matters: Building Safer Transportation Systems with Pedestrian Asset Data | Vision Zero Network

Many communities lack reliable, up-to-date information about essential elements of their transportation systems, preventing them from making the case for safety improvements. Join us October 23rd for ...

visionzeronetwork.org

1 2

UC Berkeley SafeTREC @ucberkeleysafetrec.bsky.social · 8d

SafeTREC's Sujin Lee will present @ucberkeleyofficial.bsky.social's winning INRIX + MetroLab 2025 project in the October 8th student showcase - register now to learn how 4 of the 12 university finalists are transforming complex transportation data into actionable insights: inrix.com/learn/talk-w...

Metrolab Student Showcase

INRIX helps cities and businesses use big data to identify and solve transportation problems, making the world safer, happier and greener.

inrix.com

UC Berkeley SafeTREC @ucberkeleysafetrec.bsky.social · 8d

SafeTREC's Matt Raifman discusses #TransportationSafety implications of #AutonomousVehicles in "If a driverless Waymo commits a traffic violation, who gets the ticket?" www.sfchronicle.com/bayarea/arti...

If a driverless Waymo commits a traffic violation, who gets the ticket?

The incident comes at a time when Waymo has been vigorously promoting its safety records to build public trust with the still emerging driverless technology.

www.sfchronicle.com

1

UC Berkeley SafeTREC @ucberkeleysafetrec.bsky.social · 8d

Get the latest SafeTREC news 📣 on new #TransportationSafety #Research, updated #TransportationInjuryMappingSystem, new California #ActiveTransportation Data Portal and more!! mailchi.mp/berkeley/saf...

Home page of the new California Active Transportation Data Portal, with an image of people walking and biking.

UC Berkeley SafeTREC @ucberkeleysafetrec.bsky.social · 15d

SafeTREC/CPBS #Research led by Julia Griswold & UWM Robert Schneider highlights "new framework for a context-sensitive roadway classification that can offer states a way to consider context, not just vehicle movement, in setting #SpeedLimits": ssti.us/2025/09/09/m... #SpeedManagement #RoadSafety

More states are moving away from the 85th percentile rule to set speeds

By Eric Murphy States are increasingly moving past the outdated “85th percentile rule” for setting speed limits, weighing factors other than the observed traffic flow in those calculations. The AP rec...

ssti.us

1 3

UC Berkeley SafeTREC @ucberkeleysafetrec.bsky.social · 15d

Tune in to the @kpbssandiego.bsky.social conversation w/our CPBS colleague SDSU's Bruce Appleyard, @circulatesd.bsky.social Carlisle Dockery & @aarp.org California's Israel Hernandez on what it means to live in a truly
#Walkable city youtu.be/iGFnspBtOf0?... #PedestrianSafetyMonth

How walkable is San Diego?

YouTube video by KPBS Public Media

youtu.be

1 2

UC Berkeley SafeTREC @ucberkeleysafetrec.bsky.social · 16d

It's #RoundaboutsWeek and there's still time to join the National Center for Rural Road Safety webinar about Rural Roundabout Design and Outreach at 10am PT: zoom.us/webinar/regi...

Welcome! You are invited to join a webinar: #RoundaboutsWeek: Rural Roundabout Design and Outreach. After registering, you will receive a confirmation email about joining the webinar.

The National Center for Rural Road Safety and the NLTAPA Safety Work Group are co-hosting this FREE, 1.5-hour online webinar. Webinar Description Your requests for a rural roundabout webinar have be...

zoom.us

1

UC Berkeley SafeTREC @ucberkeleysafetrec.bsky.social · 23d

Research from SafeTREC alum/postdoc Iman Mahdinia &
UT Knoxville's Nastaran Moradloo & Asad Khattak highlights nighttime #PedestrianSafety & the role of pedestrian automatic emergency braking systems:
sciencedirect.com/science/arti... #SafeSystem #CAPedestrianSafetyMonth

Figure 7 demonstrates the brightness of the different low-beam headlight types, which could be used to measure headlight performance.

1

UC Berkeley SafeTREC @ucberkeleysafetrec.bsky.social · 24d

Happy National Postdoc Appreciation Week!! This week we're celebrating our awesome Postdoctoral Scholars Sujin Lee and Jean Doig, and the critical work they do @ucberkeleyofficial.bsky.social to advance #TransportationSafety for all!! 🌟 🎉 #ShoutOutYourPostdoc
#CalPostdoc #NPAW2025

Postdoctoral scholar Sujin Lee, smiles facing the camera on a city street with a brick building and bridge in the background.

Postdoctoral scholar Jean Doig, smiles facing the camera, wearing glasses and a dark blue striped shirt.

1

UC Berkeley SafeTREC @ucberkeleysafetrec.bsky.social · 25d

New SafeTREC research brief provides an early analysis of California’s rollout of #SpeedSafetyCamera pilot programs under Assembly Bill 645 (AB 645): escholarship.org/uc/item/98r1... #RoadSafety #California

An Early Analysis of Speed Safety CameraProgram Rollout in California

Author(s): Blodgett, Kyler | Abstract: This research brief offers an early analysis of California’s rollout of speed safety camera pilot programs under Assembly Bill 645 (AB 645). No California city h...

escholarship.org

2

UC Berkeley SafeTREC @ucberkeleysafetrec.bsky.social · 29d

New #Research highlights the development of a context-sensitive roadway classification framework for #SpeedLimit setting in the US that aligns with the #SafeSystemApproach: www.sciencedirect.com/science/arti... #SpeedManagement

Fig. 1. One Network Framework Classification Matrix by the Waka Kotahi NZ Transport Agency. Adapted from (Waka Kotahiwak, 2022a).

UC Berkeley SafeTREC @ucberkeleysafetrec.bsky.social · 29d

SafeTREC director Julia Griswold discusses #RoadSafety in @sfgate.com story "Bay Area suburb grapples with car crash that killed 4-year-old boy": www.sfgate.com/local/articl...

Bay Area suburb grapples with car crash that killed 4-year-old boy

"We owe it to the folks who have been hurt and died."

www.sfgate.com

1 1 2

UC Berkeley SafeTREC @ucberkeleysafetrec.bsky.social · Sep 10

Still time to register for the 9/12 #MITMobilityForum "Re-examining our Streets: Engineering and Safety" w/ @strongtowns.org @clmarohn.bsky.social, CU Denver's @wesmars.bsky.social & @visionzeronet.bsky.social Leah Shahum: www.linkedin.com/posts/mit-mo...

#mitmobilityinitiative | MIT Mobility Initiative

The MIT Mobility Initiative is delighted to announce the 151st episode (and first episode of the Fall 2025 season) of the MIT Mobility Forum hosted by Prof. Jinhua Zhao taking place this Friday, Sep 1...

www.linkedin.com

1 4

UC Berkeley SafeTREC @ucberkeleysafetrec.bsky.social · Sep 9

"We're seeing the results of states and localities implementing the Safe System Approach – focusing on safer roads, safer speeds, safer vehicles, safer people and better post-crash care." National Safety Council's Mark Chung. www.nsc.org/newsroom/tra... #SafeSystem #RoadSafety

Traffic Crashes Claimed Fewer Lives in First Half of 2025, NSC Estimates

Sustained improvement requires commitment to the Safe System Approach by all stakeholders.

www.nsc.org

1