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Oguchi Lab
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A lab that tackles road traffic problems under the banner of “the science of traffic flow.”
AboutAbout the lab
The science of traffic flow
Oguchi Lab studies transportation in general, with a focus on road traffic.
Under the banner of “the science of traffic flow,” the lab aims to solve road traffic problems such as congestion and environmental impact, and to realize more advanced road traffic.
It takes a variety of approaches, including fundamental theory, analysis based on observational data, and case studies using simulation.
Its research rests on three pillars: elucidating traffic phenomena, developing technologies to evaluate policy measures, and developing traffic management methods.
Key terms
- Traffic flow
- The flow of the many vehicles and people moving along roads
- ITS (Intelligent Transport Systems)
- Transport systems that use information and communication technology to make road traffic more advanced
- Reinforcement learning
- An AI method that learns through repeated trial and error to choose actions that lead to good outcomes
NewsLab news
UTokyo Komaba Research Campus Open House 2026
Department of Civil Engineering: Information Session and Lab Introductions for Prospective Graduate Students Entering in FY2027
Master's student wins Best Poster Award at ITS Symposium 2025
Student wins Best Poster Award at ITS Symposium 2024
ResearchResearch themes
The lab aims to solve road traffic problems such as congestion and environmental impact, and to build smooth, environmentally friendly, and sustainable transport systems. Centered on “I, T, S,” a nod to Intelligent Transport Systems (ITS) based on information and communication technology, it works on understanding traffic phenomena and developing tools to evaluate policy measures.
*Illustrative imageElucidating Traffic Phenomena
The lab uses theory and observational data to clarify phenomena that occur in road and urban traffic. Examples include developing a theory of signal coordination effects at signalized intersections and analyzing driving speed and gaze near pedestrian crossings.
*Illustrative imageDeveloping Technologies for Policy Evaluation
The lab develops technologies to evaluate the effects of traffic policy measures. It studies topics such as verifying safety measures on residential streets using vehicle driving data and methods for evaluating streets from the pedestrian's perspective.
*Illustrative imageDeveloping Traffic Management Methods
The lab develops management methods that make traffic smoother and safer. Its work includes signal control using reinforcement learning and proposals for braking methods that avoid rear-end collisions.
MembersFaculty
Oguchi Lab members include faculty, project researchers and collaborative researchers, secretaries, doctoral and master's students, special graduate research students, research trainees, and external research fellows.As of 2026
- ProfessorTakashi OguchiPublications ↗
- Project Associate ProfessorAzusa ToriumiPublications ↗
- Assistant ProfessorSahachaiseree SompornPublications ↗
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Hakozaki Junction - 14” Kabacchi / CC BY 2.0 (cropped)
- Elucidating Traffic Phenomena: “TrafficJam near Nakago InterChange 20100501” 椰子之樹 at Japanese Wikipedia / CC BY 3.0 (cropped)
- Developing Technologies for Policy Evaluation: “Zone” Misei sen / CC BY 4.0 (cropped)
- Developing Traffic Management Methods: “Designed Traffic Signals” jillllybean / CC BY-SA 2.0 (cropped)
- Related lab (関本研究室): “ISS-62 Tokyo, Japan at night” NASA / Public domain (cropped)
- Related lab (次世代インフラシステム研究室(福田研究室)): “Lavaux highway at night” Deralpinbergsteiger / CC BY-SA 4.0 (cropped)
- Related lab (交通・都市・国土学研究室
（BinN / 都市生活学・ネットワーク 行動学研究グループ） ): “X-shaped pedestrian Sakura bridge over Sumida river, linking Taitō and Sumida wards, view from Tokyo Skytree, Japan” Basile Morin / CC BY-SA 4.0 (cropped) - Related lab (河川/流域環境研究室 澤田グループ): “Typhoon In-Fa (MODIS )” MODIS Land Rapid Response Team, NASA GSFC / Public domain (cropped)
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