60 Hits in 2.7 sec

Trade-offs in traffic: does being mainly a car driver or a cyclist affect adaptive behaviour while driving and cycling?

Sara Nygårdhs, Katja Kircher, Björn J. E. Johansson
2020 European Transport Research Review  
The extended control model was used as an analytical framework to examine how people adapt depending on their main and current road-user role, experiencing different infrastructure and complexity.  ...  Methods: A semi-controlled study was carried out in an urban traffic environment, where all participants travelled the same route twice, once as a cyclist and once as a car driver.  ...  KK and BJEJ both contributed to the article by continuous feed-back and discussion and BJEJ especially helped on the ECOM part of the paper. All authors read and approved the final manuscript.  ... 
doi:10.1186/s12544-020-0396-y fatcat:hweptsxp4zcjvf7k4anv32ahue

Critical gap through clearing behavior of drivers at unsignalised intersections

R. Ashalatha, Satish Chandra
2011 KSCE Journal of Civil Engineering  
Critical gap is an engineering concept generally used for determination of capacity of individual movements at unsignalised intersections.  ...  Vehicular interactions and drivers' behavior at unsignalised intersections under mixed traffic are very complex.  ...  Gap acceptance for turning movement at unsignalised intersection was examined at both aggregate and disaggregate levels.  ... 
doi:10.1007/s12205-011-1392-5 fatcat:fntq2yzuibcolkres6mm5dpmhm

Guest Editorial: Scientific Seminar of the Italian Association of Transport Academicians (SIDT) 2019

2020 IET Intelligent Transport Systems  
Improving efficiency and safety conditions of the road network is one of the main goals of intelligent transport systems (ITS).  ...  , automation of road vehicles, pedestrian and cycling modelling frameworks.  ...  In particular, the authors specify and calibrate an agent-based model that microscopically simulates the interactions between individuals and with the environment.  ... 
doi:10.1049/iet-its.2020.0477 fatcat:27kjvlchpbgdbiimiqw3n5tycu

Real‐time coordination of connected vehicles at intersections using graphical mixed integer optimization

Qiang Ge, Qi Sun, Zhen Wang, Shengbo Eben Li, Ziqing Gu, Sifa Zheng, Lyuchao Liao
2021 IET Intelligent Transport Systems  
Management of connected vehicles at unsignalised intersections is a large-scale complex problem with safety constraints and time-varying unsolved variables, which is crucial but hard to solve online.  ...  Simulation has verified the effectiveness of the scheme from both microscopic behaviour and statistical characteristics, reducing single-step computation time to 0.02 s, and saving average driving delay  ...  CONCLUSION The management of connected vehicles at unsignalised intersections is complex centralised optimisation with safety constraints and time-varying nature, which is difficult to solve in an online  ... 
doi:10.1049/itr2.12061 fatcat:5c3uz5zl3jg7lkx2sbdznrkts4

A novel, modular validation framework for collision avoidance of automated vehicles at road junctions

P. Nitsche, R.H. Welsh, A. Genser, P.D. Thomas
2018 2018 21st International Conference on Intelligent Transportation Systems (ITSC)  
The safety performance indicators selected and implemented in the framework can be seen as a new reference for conducting virtual tests at junctions.  ...  The method comprises the clustering of critical traffic scenarios at junctions as well as a simulation and evaluation framework to validate those scenarios.  ...  In particular, a right-turn manoeuvre by an AV at an unsignalised T-junction was evaluated, where another car is crossing from the right with the right of way.  ... 
doi:10.1109/itsc.2018.8569631 dblp:conf/itsc/NitscheWGT18 fatcat:32vwlakugzfs5k4satn5fbkt2y

On Social Interactions and the Emergence of Autonomous Vehicles

Carolina Centeio Jorge, Rosaldo J. F. Rossetti
2018 Proceedings of the 4th International Conference on Vehicle Technology and Intelligent Transport Systems  
Although technology can be replacing people at the driver seat, it has not as yet gained our full trust in what concerns communication in real time and safety.  ...  lack of confidence in self-driving cars and improve their trustworthiness towards more efficient and smarter mobility, as well as to identify trends and approaches to answer these emerging questions.  ...  A simulation model for pedestrian-vehicle interactions at unsignalised mid-block cross walks captures the behaviour of both vehicles and pedestrians when approaching unsignalised interactions.  ... 
doi:10.5220/0006763004230430 dblp:conf/vehits/JorgeR18 fatcat:gwklwocf6rbktnxcl2pj63ynsa

SUMMIT: A Simulator for Urban Driving in Massive Mixed Traffic [article]

Panpan Cai, Yiyuan Lee, Yuanfu Luo, David Hsu
2020 arXiv   pre-print
SUMMIT is built as an extension of CARLA and inherits from it the physics and visual realism for autonomous driving simulation.  ...  By leveraging the open-source OpenStreetMap map database and a heterogeneous multi-agent motion prediction model developed in our earlier work, SUMMIT simulates dense, unregulated urban traffic for heterogeneous  ...  This research is supported in part by the Singapore MoE AcRF Tier 2 grant MOE2016-T2-2-068 and the Singapore A*STAR Undergraduate Scholarship SE/AUS/15/016.  ... 
arXiv:1911.04074v2 fatcat:jqrt4jcapvchrbw4pv6ygz5yxu

A Game-Theoretic Approach to Decision Making for Multiple Vehicles at Roundabout [article]

Sasinee Pruekprasert, Jérémy Dubut, Xiaoyi Zhang, Chao Huang, Masako Kishida
2020 arXiv   pre-print
We perform numerical simulations to illustrate the effectiveness of the proposed process, both for safety (absence of collisions), and speed (time spent within the roundabout).  ...  We propose a distributed decision-making process that balances safety and speed of the vehicles.  ...  Scenario of interest This paper considers the decision making of n autonomous vehicles at a single-lane w-way unsignalised roundabout intersection.  ... 
arXiv:1904.06224v2 fatcat:jrvc5cxoknehtmjwq6srvqezye

Decision Making for Autonomous Vehicles at Unsignalized Intersection in Presence of Malicious Vehicles [article]

Sasinee Pruekprasert, Xiaoyi Zhang, Jérémy Dubut, Chao Huang, Masako Kishida
2019 arXiv   pre-print
In this paper, we investigate the decision making of autonomous vehicles in an unsignalized intersection in presence of malicious vehicles, which are vehicles that do not respect the law by not using the  ...  To illustrate our method, we provide numerical simulations, with different scenarios given by different cases of malicious vehicles.  ...  An intention-aware decision-making model for unsignalized intersections is studied in [9] , where drivers' intentions are modelled using two-layered hidden Markov models.  ... 
arXiv:1904.10158v2 fatcat:fyxoicnuhfcdvmza3x5hpghgai

A Method to Estimate the Capacity of an Intersection of Waterways in Ports

Xavier Bellsolà Olba, Winnie Daamen, Tiedo Vellinga, Serge P. Hoogendoorn
2019 Transportmetrica A: Transport Science  
Based on an analogy between roads and waterways, the conflict technique is applied to an intersection of waterways.  ...  Since the capacity of an intersection of waterways becomes more important, this research presents a new method to estimate this capacity.  ...  Acknowledgments This research is part of the research programme 'Nautical traffic model based design and assessment of safe and efficient ports and waterways', sponsored by the Netherlands Organization  ... 
doi:10.1080/23249935.2019.1652866 fatcat:646pu6lurnfchmorwqmwmr5n7i

Engineering Countermeasures for Left Turns at Signalized Intersections: A Review

2022 Journal of Road Safety  
Left turn crashes may take place at high speeds and at specific angles; • Various countermeasures for left turns have been designed and evaluated; • Protected left turns, roundabouts, and warning systems  ...  can be effective in increasing left-turn safety.  ...  Wu et al. (2016) assessed effectiveness of CLL design on left-turn maneuvers at signalised intersections using an analytical model.  ... 
doi:10.33492/jrs-d-21-00062 fatcat:3x7v2o6cyng2rmyiikd3btbw7e

Comparison of safety and kinematic patterns of automated vehicles turning left in interaction with oncoming manually driven vehicles

Marek Junghans, Florian Krauns, Adrian Sonka, Michael Böhm, Mandy Dotzauer
2022 Transactions on Transport Sciences  
At the Application Platform Intelligent Mobility (AIM) Research Intersection in Braunschweig, Germany, an SAE level 3 AV was turning left interacting with oncoming manually driven vehicles (MV).  ...  Highly and fully automated driving has been under development for the past two decades in order to increase comfort, efficiency, and traffic safety.  ...  Acknowledgements We would like to gratefully acknowledge the Germany Federal Ministry of Transport and Digital Infrastructure (BMVI) to grant the project "Digitaler Knoten 4.0" and the project "ViVre",  ... 
doi:10.5507/tots.2021.003 fatcat:mvphebaw3rhvtlnvldyyau3zeq

A systematic literature review of vehicle speed assistance in intelligent transportation system

Mehrdad Asadi, Mahmood Fathy, Hamidreza Mahini, Amir Masoud Rahmani
2021 IET Intelligent Transport Systems  
The findings show different driving goals, namely eco-driving, safety, comfort, travel time improvement as well as the high-level objectives addressed by vehicle speed assistance systems.  ...  The analytical discussions are provided to show different perspectives, properties and limitations of the existing solutions.  ...  They aim at traffic efficiency, safety, and ecodriving with passenger comfort in mind.  ... 
doi:10.1049/itr2.12077 fatcat:n5m65a3b4zaudllk4n5vsqe3ua


Danijela Barić, Hrvoje Pilko, Josip Strujić
2016 Transport  
The model is tested on a stretch of National Road D8 in the municipality of Podstrana near the city of Split (Croatia), which serves as an important route for commuters and tourists.  ...  The proposed AHP model provided reliable results that were robust to sensitivity analysis.  ...  Acknowledgements The research described in this paper was conducted within the scope of the research project 'Correlation between Design and Safety at Roundabouts' , funded by the Ministry of Science,  ... 
doi:10.3846/16484142.2016.1157830 fatcat:eocm34vpmjdtldbktoi76bl5pi

Simulating Autonomous Driving in Massive Mixed Urban Traffic [article]

Yuanfu Luo, Panpan Cai, Yiyuan Lee, David Hsu
2020 arXiv   pre-print
SUMMIT is built as an extension of CARLA and inherits from it the physical and visual realism for autonomous driving simulation.  ...  We also provide several real-world benchmark scenarios to show that SUMMIT simulates complex, realistic traffic behaviors, and Context-POMDP drives safely and efficiently in challenging crowd-driving settings  ...  However, driving through a crowded urban traffic, especially in uncontrolled roads or unsignalised intersections (Fig. 1) , remains an open problem.  ... 
arXiv:2011.05767v1 fatcat:hr7f36fctrf7hdmr46eorszxse
« Previous Showing results 1 — 15 out of 60 results