Traffic Light Decision Making A Simple Model To Evaluate Dangers And Guide Safe Decision Making In Outdoor Adventure Experiences

1998 ◽  
Vol 3 (2) ◽  
pp. 34-38
Author(s):  
Ian Boyle ◽  
Murray Toft
Keyword(s):  
Decision Making ◽  
Simple Model ◽  
Outdoor Adventure ◽  
Traffic Light

scholarly journals A Game Theory-Based Approach for Modeling Autonomous Vehicle Behavior in Congested, Urban Lane-Changing Scenarios

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1523
Author(s):  
Nikita Smirnov ◽  
Yuzhou Liu ◽  
Aso Validi ◽  
Walter Morales-Alvarez ◽  
Cristina Olaverri-Monreal
Keyword(s):  
Game Theory ◽  
Decision Making ◽  
Autonomous Vehicles ◽  
Autonomous Vehicle ◽  
Urban Traffic ◽  
Road User ◽  
Lane Change ◽  
Traffic Light ◽  
User Interactions ◽  
Lane Changing

Autonomous vehicles are expected to display human-like behavior, at least to the extent that their decisions can be intuitively understood by other road users. If this is not the case, the coexistence of manual and autonomous vehicles in a mixed environment might affect road user interactions negatively and might jeopardize road safety. To this end, it is highly important to design algorithms that are capable of analyzing human decision-making processes and of reproducing them. In this context, lane-change maneuvers have been studied extensively. However, not all potential scenarios have been considered, since most works have focused on highway rather than urban scenarios. We contribute to the field of research by investigating a particular urban traffic scenario in which an autonomous vehicle needs to determine the level of cooperation of the vehicles in the adjacent lane in order to proceed with a lane change. To this end, we present a game theory-based decision-making model for lane changing in congested urban intersections. The model takes as input driving-related parameters related to vehicles in the intersection before they come to a complete stop. We validated the model by relying on the Co-AutoSim simulator. We compared the prediction model outcomes with actual participant decisions, i.e., whether they allowed the autonomous vehicle to drive in front of them. The results are promising, with the prediction accuracy being 100% in all of the cases in which the participants allowed the lane change and 83.3% in the other cases. The false predictions were due to delays in resuming driving after the traffic light turned green.

scholarly journals USING THE ANALYTIC HIERARCHY PROCESS FOR DECISION MAKING IN SMART TRAFFIC LIGHT FOR HIGH PRIORITY VEHICLE

2019 ◽  
Vol 4 (2) ◽  
pp. 146-153
Author(s):  
Muhammad Izzuddin Mahali ◽  
Eko Marpanaji ◽  
Muhammad Adi Febri Setiawan
Keyword(s):  
Decision Making ◽  
Analytic Hierarchy Process ◽  
Traffic Light ◽  
Analytic Hierarchy ◽  
The Analytic Hierarchy Process ◽  
Waterfall Model ◽  
Smart Traffic ◽  
Hierarchy Process

Kemacetan sering terjadi di banyak persimpangan jalan kota-kota besar di Indonesia. Sesuatu yang penting seperti kendaraan prioritas sering pula berada pada kemaccetan tersebut. Untuk mengatasi permasalahan tersebut terdapat inovasi baru yaitu Intelligent Traffic Light yang dibekali dengan Aplikasi “Bang Jopin”. Namun terdapat permasalahan baru ketika ada kendaraan prioritas melakukan request emergency secara bersamaan pada traffic light yang sama. Penentuan prioritas tidak dapat dilakukan dengan pengurutan saja karena ketika memprioritaskan kendaraan pada traffic light harus mempertimbangkan karakteristik traffic light dan kebiasaan pengendara.    Oleh kerena itu, Metode Analitical Hierarchy Process (AHP) merupakan solusi yang tepat dalam menentukan kendaraan prioritas yang didahulukan ketika ada lebih dari satu request pada satu waktu. Penelitian ini bertujuan untuk menentukan bobot masing-masing kriteria, menguji fungsi program, dan menerapkannya pada perangkat. Metode Penelitian yang digunakan adalah waterfall model.

System-dynamic model of power redistribution among several subjects

2021 ◽  
pp. 52-57
Author(s):  
D.S. Zhukov
Keyword(s):  
Decision Making ◽  
Simple Model ◽  
Dynamic Model ◽  
Dynamic Modeling ◽  
Computer Experiments ◽  
System Dynamic ◽  
System Dynamic Model ◽  
Mathematical Apparatus ◽  
Stocks And Flows ◽  
Specialized Program

A simple model simulating the redistribution of decision-making functions between the state, business, bureaucracy and regional elites is presented. The methodological basis of the work is system-dynamic modeling. The model is implemented in the specialized program Powersim Studio 10. A diagram of stocks and flows is considered, all elements of which were compared with certain political science concepts. The mathematical apparatus of the model is described. Some results of computer experiments are presented: these results indicate the operability and interpretability of the model.

scholarly journals Towards an App to Estimate Patient-Specific Perioperative Femur Fracture Risk

2020 ◽  
Vol 10 (18) ◽  
pp. 6409 ◽  
Author(s):  
L. Esposito ◽  
V. Minutolo ◽  
P. Gargiulo ◽  
H. Jonsson ◽  
M. K. Gislason ◽  
...  
Keyword(s):  
Decision Making ◽  
Fracture Risk ◽  
Ad Hoc ◽  
Strength Distribution ◽  
Bone Diseases ◽  
Medical Decision ◽  
Patient Specific ◽  
Decision Making Process ◽  
Geometrical Parameters ◽  
Traffic Light

Total Hip Arthroplasty has been one of the most successful surgical procedure in terms of patient outcomes and satisfaction. However, due to increase in life expectancy and the related incidence of age-dependent bone diseases, a growing number of cases of intra-operative fractures lead to revision surgery with high rates of morbidity and mortality. Surgeons choose the type of the implant, either cemented or cementless prosthesis, on the basis of the age, the quality of the bone and the general medical conditions of the patients. Generally, no quantitative measures are available to assess the intra-operative fracture risk. Consequently, the decision-making process is mainly based on surgical operators’ expertise and qualitative information obtained from imaging. Motivated by this scenario, we here propose a mechanical-supported strategy to assist surgeons in their decisions, by giving intelligible maps of the risk fracture which take into account the interplay between the actual mechanical strength distribution inside the bone tissue and its response to the forces exerted by the implant. In the presented study, we produce charts and patient-specific synthetic “traffic-light” indicators of fracture risk, by making use of ad hoc analytical solutions to predict the stress levels in the bone by means of Computed Tomography-based mechanical and geometrical parameters of the patient. We felt that if implemented in a friendly software or proposed as an app, the strategy could constitute a practical tool to help the medical decision-making process, in particular with respect to the choice of adopting cemented or cementless implant.

The role of planning in outdoor adventure decision-making

2018 ◽  
Vol 19 (4) ◽  
pp. 343-357 ◽  
Author(s):  
Mike Boyes ◽  
Tom Potter ◽  
Soren Andkjaer ◽  
Martin Lindner
Keyword(s):  
Decision Making ◽  
Outdoor Adventure

scholarly journals Validation of the Hazard and Vulnerability Analysis of Coastal Erosion in the Caribbean and Pacific Coast of Colombia

2019 ◽  
Vol 7 (8) ◽  
pp. 260 ◽  
Author(s):  
Oswaldo Coca-Domínguez ◽  
Constanza Ricaurte-Villota
Keyword(s):  
Decision Making ◽  
Risk Management ◽  
Vulnerability Assessment ◽  
Coastal Erosion ◽  
Pacific Coast ◽  
Cultural Ecology ◽  
Coastal Hazards ◽  
Social Aspects ◽  
Traffic Light ◽  
The Caribbean

A hazard and vulnerability assessment of coastal erosion is an essential first step for planning and decision-making, because it is part of risk management and its results are in the form of easily interpreted traffic-light maps. For the analysis of the assessment in this work, a methodology is proposed which considers three components for both hazard (magnitude, occurrence, and susceptibility) and vulnerability (exposure, fragility, and lack of resilience), through a semi-quantitative approximation, by applying relative indices to different variables. This methodology has been adapted to analyze hazards and vulnerability caused by coastal erosion combining physical and social aspects. For the validation of this methodology, Spratt Bight Beach (Colombian Caribbean) and La Bocana beach (Colombian Pacific) were selected in order to have contrasting regions and to validate the application of the method over a geographical range. One of the most significant outcomes of the assessment of the degree of hazard and vulnerability is that the rating may represent different combinations of factors. It is therefore important to study and interpret the components separately, allowing us to propose corrective and/or prospective focused interventions at local and regional levels. In terms of vulnerability, the assessment highlighted the importance of cultural ecology as a factor of resilience to coastal hazards.

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