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PSU research shows Portland transit-oriented developments reduce car trips, especially at affordable housing sites

A new study by Portland State University's Transportation Research and Education Center (TREC) reveals that transit-oriented developments (TODs) in the Portland metro area generate significantly fewer car trips than previously estimated. At affordable housing sites, car trips were reduced to only a quarter to two-fifths of expected rates.

Stepping for digital rewards

A study found that users who exchanged daily walking steps for digital train tickets increased their walking by an average of 626.2 steps/day. Those using shopping coupon incentives walked 715.2 steps/day more on average than non-users. The results suggest effective promotion of active travel through well-designed mHealth apps.

SourceOsaka Metropolitan University·JournalJournal of Transport & Health·TypeData/statistical analysis·DateJul 30, 2025

Study finds dramatic boost in air quality from electrifying railways

A new study found that electrifying the Caltrain commuter rail line reduced riders' exposure to black carbon by an average of 89%, cutting excess cancer deaths by 51 per 1 million people. The study's findings support the case for electrifying U.S. rail systems, which still rely on old diesel locomotives.

SourceUniversity of California - Berkeley·JournalEnvironmental Science & Technology Letters·TypeObservational study·DateApr 16, 2025

Incheon National University develops advanced communication technology for faster, reliable 5G and 6G networks

Researchers at Incheon National University have developed a new AI-powered solution to improve high-speed users' connectivity in 5G and 6G networks. The method significantly reduces errors and improves data reliability by prioritizing key parameters such as angles and delays.

SourceIncheon National University·JournalIEEE Transactions on Wireless Communications·TypeComputational simulation/modeling·DateFeb 6, 2025

New findings: East Palestine train derailment caused chemical pollution falling to the earth surface across the US and beyond

A new study reveals that the East Palestine train accident released inorganic pollutants into the atmosphere, which were found in precipitation across a large geographical area covering at least 16 states. The pollutants also reached southern Canada and North Carolina, posing significant risks to aquatic flora and fauna.

SourceIOP Publishing·JournalEnvironmental Research Letters·DateJun 19, 2024

Advancing intelligent railway systems: GNSS-based applications and field demonstration validation

Researchers developed a novel train control system with dynamic configuration, reduced track-side equipment, and improved maintainability to achieve cost savings and increased transportation efficiency. The study promotes the integration of GNSS-based positioning and navigation technologies to enhance railway operations.

SourceKeAi Communications Co., Ltd.·JournalHigh-speed Railway·DateAug 6, 2023

Safe train transport

Oak Ridge National Laboratory researchers reconstructed crude oil transport paths by linking geotagged images with national railway networks. The study found that these inferred routes aligned with approximately 96% of documented incidents, highlighting potential risks along rail routes.

SourceDOE/Oak Ridge National Laboratory·JournalTransportation Research Record Journal of the Transportation Research Board·DateJul 18, 2023

What is the impact of replacing short-haul flights on CO2 emissions and international connectivity?

A study by Universitat Oberta de Catalunya (UOC) finds that replacing short-haul flights with rail in Germany could reduce CO2 emissions by 2.7-22%. However, this policy may also harm international connectivity, particularly for peripheral regions and passengers with limited onward connections.

SourceUniversitat Oberta de Catalunya (UOC)·JournalCase Studies on Transport Policy·TypeCase study·DateFeb 13, 2023