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Nakamura (Hideki) Lab
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The lab studies how roads are designed and used to make road traffic safe and comfortable.
AboutAbout the lab
Toward safe and comfortable road traffic.
The Nakamura (Hideki) Lab studies road planning and design and traffic operations, aiming to achieve safe and comfortable road traffic.
Believing that Japanese roads do not fully deliver the performance appropriate to their functions, the lab pursues rational road structure design and traffic operation methods based on the true functions of roads.
The lab values on-site observation, such as video recording from sidewalks and building rooftops and driving surveys with an instrumented vehicle.
Many students are international, and in the graduate students' rinko seminar, where members take turns presenting, presentations and discussions are basically held in English.
Key terms
- Traffic operations
- Measures for how to use a road to keep traffic flowing, such as lane allocation and signal control
- Performance verification
- Checking whether something that has been designed meets the required performance and standards
- Roundabout
- An intersection where cars travel around a circular road in one direction. It has no traffic signals, and vehicles already in the circle have priority
ResearchResearch themes
The lab studies rational road structure design and traffic operation methods that capture the essential functions of roads and pursue the performance they should fulfill. It works on performance-verified road planning and design, roundabouts, and the structural design and signal control of signalized intersections, and it also takes part in research projects of national and local governments and in academic society committees.
*Illustrative imagePerformance-verified road planning and design
In conventional design, a road's structure is determined almost automatically by its type, so the performance the road will actually deliver is not verified. The lab studies a new method that assumes traffic conditions at the planning and design stage and verifies whether the required performance can be met, along with the road structures and traffic operations this requires.
*Illustrative imageRoundabout planning and design
At Japanese intersections, where right-angle collisions continue to occur, the lab studies how to improve intersection performance by introducing roundabouts, which are widely used in Europe and North America, in suitable locations.
*Illustrative imageStructure and signal control of signalized intersections
At signalized intersections, where pedestrians, cyclists, and cars share the same space, the structure and the signal control greatly affect safety, smoothness, and environmental impact. Focusing on the room for improvement that remains in crosswalk positions, stop lines, signal cycle length, and similar elements, the lab studies how design and control should be done.
MembersFaculty
The members of the Nakamura (Hideki) Lab are faculty and master's and undergraduate students.As of 2024
- ProfessorHideki Nakamura
- LecturerXin Zhang
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: “Traffic light at Jeffrey Road and Smoketree” aismallard / CC BY-SA 3.0 (cropped)
- Performance-verified road planning and design: “Road building-Hungary-1” Snr. László Szalai / Public domain (cropped)
- Roundabout planning and design: “GA 920 traffic circle approach” Mccunicano / CC BY-SA 4.0 (cropped)
- Structure and signal control of signalized intersections: “Cobham Drive Hillcrest Hamilton Traffic Light Construction 2” Qwertyxp2000 / CC BY 4.0 (cropped)
- Related lab (Asano Lab): “Tokyo Shibuya Scramble Crossing” Benh LIEU SONG (Flickr) / CC BY-SA 2.0 (cropped)
- Related lab (Morikawa-Yamamoto-Miwa Lab (NUTREND) (Tomio Miwa)): “Autonomous vehicle trial - geograph.org.uk - 6881843” Hugh Venables / CC BY-SA 2.0 (cropped)
- Related lab (Morikawa-Yamamoto-Miwa Lab (NUTREND) (Toshiyuki Yamamoto)): “GDS-display” Cameramann / CC BY-SA 4.0 (cropped)
- Related lab (Structural Engineering, Materials Engineering, and Disaster Prevention (Fuminobu Ozaki) Lab): “Tu braunschweig panel furnace preparation” Achim Hering / CC BY 3.0 (cropped)
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