The University of Tokyo · 공학
보양 교수의 연구실은 자율주행차와 첨단 차량 통신 기술을 기반으로 한 교통 안전 기술 개발에 초점을 맞추고 있습니다. 특히 비신호 교차로에서의 주행 안정성 향상을 위한 인-비히클 트래픽 라이트, 보행자와의 상호작용을 고려한 자율주행차의 경로 계획, 수준 2 자율주행 시스템이 운전자 행동에 미치는 영향 등 실생활 교통 환경에서의 적용 가능성을 탐구하고 있습니다. 또한, 기술적 도전 과제인 공기 간격 제어 및 동적 안정성 확보 등 메카트로닉스 기반의 혁신적 교통 시스템 개발도 함께 진행하고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
Ground traffic lights are essential for maintaining traffic efficiency and safety at intersections. However, unsignallised intersections are still frequent in actual traffic environments. With the development of new forms of vehicular communication, in‐vehicle traffic lights can assist drivers at unsignallised intersections. The authors proposed two types of in‐vehicle traffic lights to assist drivers; these corresponded to two‐way and all‐way stop‐controlled intersections. They adopted gap acce
Emerging vehicular communication makes it possible to provide traffic light information to drivers inside vehicles with the application of in‐vehicle devices. However, the effect of this method on driver behaviour is still unclear, and there is concern that the application of in‐vehicle traffic lights may result in driver distraction. This study proposed two modes of in‐vehicle traffic lights to assist drivers: a ‘current’ mode providing real‐time information of the upcoming ground traffic light
It is an essential issue for autonomous vehicles to keep driving safety while sharing spaces with other road users, especially moving pedestrians. An ideal trajectory planning of autonomous vehicles should be collision-free and feasible for the vehicles to execute. Previous efforts on trajectory planning mainly focused on traditional roads, and the research into pedestrian-vehicle interaction in shared spaces were still insufficient. This study proposed a prediction-planning collaboration method
It is becoming a common scene to observe the usages of level 2 automated driving in our daily life. To ensure driving safety while using the level 2 automated driving systems in various traffic conditions, it is an essential issue to clarify the influences of the level 2 automated driving on driver behaviors. Previous studies normally focused on drivers’ reactions to emergency events while using level 2 automated driving. However, it is still unclear that how will drivers interact with the level
In-vehicle traffic lights that assist drivers in crossing intersections are in development; however, the availability of the in-vehicle traffic light will be limited if the waiting time of a vehicle is not considered in actual traffic conditions, especially at priority-controlled unsignalized intersections that normally consist of one major and two minor roads. The present study therefore investigated the effects of the waiting time on driver behaviors to improve the in-vehicle traffic light for
At the University of Paderborn a mechatronic railway system (NBP-Neue Bahntechnik Paderborn) is designed and developed, which is guided by ordinary wheels and rails and is driven via a doubly fed linear motor. The concept is based on the operation of small shuttle units. The drive modules are designed as single axle units. As a result of thrust and normal forces the secondaries can pitch up and down because of the rising torque around the axle. So the pitching angle of the secondary remains in a
Most of intersections are without traffic signals to help drivers safely pass through intersections. Nowadays, it becomes possible to transfer traffic information of unsignalized intersections to drivers by application of communication technologies. Therefore, this study concentrated on in-vehicle traffic lights for assisting drivers to cross unsignalized intersections. Dependent on different traffic situations, unsignalized intersections can be classified as priority-controlled and non-priority
A compact laser scanner that scans approximately 90° has been demonstrated, which is enabled by an electrothermal MEMS mirror encapsulated in a 3D printed holder with a curved dome for optical amplification.
An in-vehicle traffic light system was proposed to assist drivers at intersections, by displaying traffic light inside vehicles based on vehicular communication. Driving simulator experiments have demonstrated that the system can be an effective method to provide assistance for drivers. However, previous studies assumed that all the vehicles were equipped with vehicular communication devices and the proposed in-vehicle traffic light, which is still impossible in the actual driving environment. T
Accurately recognizing the influence of excavation disturbance on the traversing cross-type deep foundation pit of the subway, determining the active range of the disturbance, and reasonably arranging the structure within its range can effectively ensure the safety of the project and save resources to achieve the goal of sustainable development. A three-dimensional model was established using the soil small strain hardening model to examine the subway deep foundation pit project in the CBD (cent
Summary This paper is concerned with the problem of practical exponential stability for hybrid impulsive stochastic functional differential systems with delayed impulses, which comprise three classes of systems: the systems with unstable continuous stochastic dynamics and stable discrete dynamics, the systems with stable continuous stochastic dynamics and unstable discrete dynamics, and the systems where both the continuous stochastic dynamics and the discrete dynamics are stable. By using the L
