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mD-Resilience: A Multi-Dimensional Approach for Resilience-based Performance Assessment in Urban Transportation

Farnaz Khaghani, Farrokh Jazizadeh
2020 Sustainability  
These attributes were integrated into a performance index by using Data Envelopment Analysis (DEA) as a non-parametric method.  ...  (HPLI) disturbances such as traffic congestions.  ...  This could be viewed from the lens of resilience.  ... 
doi:10.3390/su12124879 fatcat:4s6fygk3gvcu7a33v7td2kveiy

On the periodicity of traffic oscillations and capacity drop: The role of driver characteristics

Danjue Chen, Soyoung Ahn, Jorge Laval, Zuduo Zheng
2014 Transportation Research Part B: Methodological  
Several studies attributed capacity drop, a reduction in bottleneck discharge rate, to systematic lane changes near an active bottleneck that create "voids" in traffic streams due to bounded accelerations  ...  a macroscopic view over 30 min and (c) for the details of the oscillation circled in (b).  ... 
doi:10.1016/j.trb.2013.11.005 fatcat:degdsjwbanhnfbyj7vl5onpvlq

Merging Vehicles and Lane Speed-Flow Relationship in a Work Zone

Li Li, Dong Zhang
2018 Sustainability  
By comparing the estimated speed-flow models, it was found that when a queue is forming, the extent of the capacity drop and speed reduction is different for through lanes.  ...  At the identified upstream bottlenecks, capacity drop was found in speed-flow diagrams of through-lane traffic, but it was not found in the diagrams of merge-lane traffic flows.  ...  In the authors' view, the distinctive speed-flow curve of the merge-lane traffic could be attributed to two causes.  ... 
doi:10.3390/su10072210 fatcat:a7tf5bjajrfgdod7hvmgf5ehke

Evaluating Performance of a Proactive Optimal Variable Speed Limit Control Using Different Objective Functions

Md. Hadiuzzaman, Jie Fang, Ying Luo, Tony Z. Qiu
2013 Procedia - Social and Behavioral Sciences  
In addition, the model is simulated for a range of demand inputs, and analysis is carried out to see how efficient the VSL control is to improve the freeway mobility.  ...  To resolve this issue, in this paper, the authors adopt a previously developed novel VSL control strategy that explicitly considers traffic characteristics at active bottleneck, and its upstream-downstream  ...  Acknowledgements The authors would like to give thanks to Ken Karunaratne, Wai Cheung, Daniel Kabaroff, Matthew Knezevich, and Craig Walbaum from the traffic operation group in the City of Edmonton for  ... 
doi:10.1016/j.sbspro.2013.08.321 fatcat:gzx2jktkgfffnpdxki2523uzq4

On 1-D PDE-Based Cardiovascular Flow Bottleneck Modeling and Analysis: A Vehicular Traffic Flow-Inspired Approach [article]

Nikolaos Bekiaris-Liberis
2021 arXiv   pre-print
This is achieved adopting an approach for modeling and analysis that relies on the potential correspondence of 1-D blood flow dynamics in the presence of stenosis, with 1-D traffic flow dynamics in the  ...  We reveal such correspondence in relation to the respective (for the two flow types), speed dynamics and a (consistent with them) fundamental diagram-based reduction; bottleneck dynamic effects description  ...  The arterial stenosis models presented and the correspon- However, such a reduction may be useful in, for example, dence with vehicular traffic flow bottleneck models, may studying the dynamic  ... 
arXiv:2112.11924v1 fatcat:jk57sdpx2zedtnak32kdw6kc2m

Revisiting the empirical fundamental relationship of traffic flow for highways using a causal econometric approach [article]

Anupriya, Daniel J. Graham, Daniel Hörcher, Prateek Bansal
2021 arXiv   pre-print
The proposed approach is benchmarked against standard curve-fitting methods in estimating the flow-density relationship for three highway bottlenecks in the United States.  ...  Our results, thus, have important implications both for traffic engineers and transport economists.  ...  Authors are also thankful to Manuel Wiesenfarth for helping with queries related to the Bayesian non-parametrics and implantation.  ... 
arXiv:2104.02399v1 fatcat:jojwx2on3fhgjduumykejvg4ui

Multi-Vehicle Simulation in Urban Automated Driving: Technical Implementation and Added Benefit

Alexander Feierle, Michael Rettenmaier, Florian Zeitlmeir, Klaus Bengler
2020 Information  
For this purpose, we have implemented a multi-vehicle simulation consisting of two driving simulators, one for the AV and one for the manual vehicle.  ...  first despite oncoming traffic.  ...  This could be attributable to the fact that the AV arrived at the bottleneck a little later, which is an indication to yield the right of way in real world traffic [31] .  ... 
doi:10.3390/info11050272 fatcat:z7iuvx5glbbxjarja6qg6vs2iq


Chenhao Xie, Fu Xin, Mingsong Chen, Shuaiwen Leon Song
2019 Proceedings of the 46th International Symposium on Computer Architecture - ISCA '19  
Finally, evaluations on our VR featured simulator show that OO-VR provides 1.58x overall performance improvement and 76% inter-GPM memory traffic reduction over the state-of-the-art multi-GPU systems.  ...  However, the entire multi-GPU system is viewed as a single GPU which ignores the data locality in VR rendering during the workload distribution, leading to tremendous remote memory accesses among GPU models  ...  ., unified programming model similar to CUDA) for GPU developers. Future Multi-GPU System Bottleneck for VR Workloads.  ... 
doi:10.1145/3307650.3322247 dblp:conf/isca/XieFCS19 fatcat:yhmmnagmwfaknjaw2mgbnidoia

Performance Evaluation of Pre-Congestion Notification

Xinyang Zhang, Anna Charny
2008 IEEE International Workshop on Quality of Service, IWQoS  
Pre-Congestion Notification (PCN) has been recently proposed at IETF as a practical framework for scalable measurement-based flow control system for support of inelastic real-time traffic.  ...  Specifically, we believe that our results support a conjecture that while bottleneck behaviors are possible to predict with high accuracy using these models, per-aggregate behavior of admission control  ...  It's easy to see that a smaller L.U means the reduction of the overall sustainable rate. Hence, for CL, the increase in queue length amplifies the multi-bottleneck effect.  ... 
doi:10.1109/iwqos.2008.29 dblp:conf/iwqos/ZhangC08 fatcat:ldux3sj3prdlnjwifx3p5aets4

Challenges and Opportunities in Transportation Data

Kristin Tufte, Kushal Datta, Alekh Jindal, David Maier, Robert L. Bertini
2018 Proceedings of the 1st ACM/EIGSCC Symposium on Smart Cities and Communities - SCC '18  
From the time and money lost sitting in congestion and waiting for traffic signals to change, to the many people injured and killed in traffic crashes each year, to the emissions and energy consumption  ...  However, this wealth of data has yet to be effectively leveraged, thus providing opportunities in areas such as improving traffic safety, reducing congestion, improving traffic signal timing, personalizing  ...  ACKNOWLEDGMENTS The authors acknowledge the Intel Science and Technology Center for Big Data (ISTC-BD) and the Portland State University Institute for Sustainability Solutions (ISS) for their support of  ... 
doi:10.1145/3236461.3241971 fatcat:krxzqnwz2nhuxg4oz7kikenihi

Integrated Variable Speed Limits and Lane-Changing Control for Freeway Lane-Drop Bottlenecks

Yuqing Guo, Huile Xu, Yi Zhang, Danya Yao
2020 IEEE Access  
We adopt an improved multiclass cell transmission model (CTM) for traffic state prediction, then use the genetic algorithm (GA) for optimization which optimizes traffic network performance, and implement  ...  INDEX TERMS Connected and automated vehicles (CAVs), lane-changing (LC) control, lane-drop bottlenecks, variable speed limits (VSL). 54710 This work is licensed under a Creative Commons Attribution 4.0  ...  Lighthill-Whitham-Richards (LWR) model, METANET model, and CTM are the three most popular models used for traffic prediction [16] , [17] .  ... 
doi:10.1109/access.2020.2981658 fatcat:wdel7yvqsbed3jmdzkujuu353a

An Integrated Variable Speed Limit and ALINEA Ramp Metering Model in the Presence of High Bus Volume

Dadashzadeh, Ergun
2019 Sustainability  
For current traffic conditions, the proposed model is able to improve total travel time by 9.0%, lower the number of average delays of mixed traffic and buses by 29.1% and 81.5% respectively, increase  ...  The results of the scenario analysis confirmed that the proposed model is not only able to decrease delay times on the Metrobus system but is also able to improve the adverse effects of high bus volume  ...  Bird's eye view of study area (b), source: Google Earth). Figure 3 . 3 Modeled study area by VISSIM (a) vs. Bird's eye view of study area (b), source: Google Earth).  ... 
doi:10.3390/su11226326 fatcat:ba3ytw5qp5bdnmfeaadvyo6kr4

A Review on Network Intrusion Detection System Using Machine Learning

Bello Nazifi Kagara, Maheyzah Md Siraj
2020 International Journal of Innovative Computing  
The concept of machine learning is considered an important method used in intrusion detection systems to detect irregular network traffic activities.  ...  The school at large, University Teknology Malaysia, for providing me with the necessary skills, knowledge and learning facilities to prepare this paper, and my father, Bello Kagara for his unending support  ...  The authors highlight the significant advantages of using multi-class IDS, supported by recent studies and suggestions for analysis.  ... 
doi:10.11113/ijic.v10n1.252 fatcat:6edwiqiufvazdnjn7pkejaatx4

Bandwidth Optimized Continuous Querying In Public Cloud Storage

P.Dileep Kumar Reddy
2017 International Journal for Research in Applied Science and Engineering Technology  
The streaming analytics platform Continuous Hive(CHive) is suitable for distributed tele communication clouds.  ...  Bandwidth efficient execution of online large information analytics in telecommunication network demands for tailored solutions.  ...  TMACS In the previous approaches we propose a multi authority CP-ABE access control method which deals with the single-point bottleneck on both security and performance.  ... 
doi:10.22214/ijraset.2017.9098 fatcat:zddezx4xkfbtjmrvkzmom3nwxy

Visual analysis of route diversity

He Liu, Yuan Gao, Lu Lu, Siyuan Liu, Huamin Qu, Lionel M. Ni
2011 2011 IEEE Conference on Visual Analytics Science and Technology (VAST)  
We further demonstrate that our system can be used not only to suggest better routes for drivers but also to analyze traffic bottlenecks for transportation management. *  ...  this paper we first propose a trajectory visualization method that examines the regions where the diversity exists and then develop several novel visualization techniques to display the high dimensional attributes  ...  We also thank the anonymous reviewers for their constructive and valuable comments. This work was supported in part by grant HK RGC GRF 619309 and an IBM Faculty Award.  ... 
doi:10.1109/vast.2011.6102455 dblp:conf/ieeevast/LiuGLLQN11 fatcat:eikiuih7mzbl3f4v5ddki5vgt4
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