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An improved comfortable driving model with inter-vehicle communication (IVC) is proposed in this paper. Vehicles in our model can obtain more integrated driving information such as headway distance, brake light state and velocity through IVC. By taking a number of preceding vehicles' driving information into consideration, drivers can predict the next time-step velocity more reasonably and effectively...
A formal mathematical model of an Adaptive Cruise Controller (ACC)in SpaceEx is presented with a view to formally verify it to ensure its safety critical behavior. SpaceEx (an academic open source tool) is a hybrid systems modeling and verification platform which employs efficient implementation of reachability and safety verification algorithms which are scalable under certain assumptions, to circumvent...
Automotive cyber physical systems (CPSs) involve interactions between software controllers, communication networks, and physical devices. These systems are among the most complex cyber physical systems being designed by humans. However, automotive cyber physical systems are not a loose combination of cyber system and physical system, but are a tight and comprehensive integration, and they are ubiquitous...
Cyber-Physical Systems (CPS) is an integration of the computation process and physical processes, which can be modeled as a hybrid system. From the modeling perspective of CPS systems, the paper analyzes the limitations of traditional hybrid models, and proposes the extended hybrid automata model. The extended model is capable of representing hierarchy, concurrency and network delay. Finally, by modeling...
Pedestrian movement behavior can be analyzed in different ways. One of the most common approaches for this subject is the cellular automata. However, the pedestrian behavior is usually modeled by a reactive-response framework. Also, the pedestrians are treated as just numbers or elements in a grid. This paper proposes a basic framework for a multi-agent pedestrian movement model. Applying the same...
T-shaped intersections are very common in urban street network for the constraints of space or other factors. They join the main road and the minor road together. In this paper, the capacity of unsignalized T-shaped intersection is investigated by a cellular automata model. Vehicles approaching from different direction will conflict with each other, because they are not controlled by traffic lights...
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