Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 69 for “"Signal Control"”.
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Signal Control for Partial Cloverleaf Interchanges
This research was aimed at studying the signal operations at partial cloverleaf interchanges. Signal timing techniques on phase schemes, phase splits, and signal offsets were developed for two closely spaced intersections controlled by a single controller at partial cloverleaf interchanges. A case …
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Multi-objective Optimization in Traffic Signal Control
Traffic Signal Control systems are one of the most popular Intelligent Transport Systems and they are widely used around the world to regulate traffic flow. Recently, complex optimization techniques have been applied to traffic signal control systems to improve their performance. Traffic simulators …
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Multi-Criteria Decision Based Left-turn Signal Control Guideline
There are primarily three types of left-turn controls at signalized intersections, namely permitted, protected, and protected-permitted. Selecting a left-turn signal control type is one of the major elements in traffic signal design and operations, and should be a systematic approach involving …
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Small signal control of multiterminal dc/ac power systems
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1981.
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The network design problem: The traffic-responsive signal control scheme
… Design Problem (NDP): the Traffic-Responsive Signal Control (TRSC) scheme. The TRSC scheme considers the effect of signal controls on traffic flows in the standard traffic assignment problem through the integration of traffic control and traffic assignment submodels. Alternative problem …
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Integration of predictive routing information with dynamic traffic signal control
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1994.
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An Evaluation of Transit signal Priority and SCOOT Adaptive Signal control
… in urban areas using lower cost means. Transit signal priority is considered to be one of the most effective ways to improve the service of transit vehicles. Transit signal priority has become a very popular topic in transportation in the past 20 to 30 years and it has been implemented in many …
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Design of a thermal operational amplifier : thermics applied to heat signal control.
Thesis. 1977. Ph.D.--Massachusetts Institute of Technology. Dept. of Mechanical Engineering.
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Development and Applications of Multi-Objectives Signal Control Strategy during Oversaturated Conditions
… under-saturated conditions, operation of traffic signal systems during congestion requires careful consideration and analysis of the underlying causes of the congestion before developing mitigation strategies. The objectives of this research are to provide a practical guidance for practitioners to …
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High-speed terahertz signal control and read-out for future terahertz communication systems
… systems necessitates fast and efficient THz signal control and readout, enabling the encoding of data streams onto THz-frequency signals and their subsequent decoding. This project aims to design, develop, and demonstrate THz detectors and modulators, and to study the physical principles of …
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eMARLIN: Addressing Coordination and Partial Observability in Distributed Reinforcement Learning for Traffic Signal Control
… focus on multi-intersection Adaptive Traffic Signal Control (ATSC). ATSC adapts traffic signal timing based on real-time traffic data, but the increasing granularity and decentralization of control introduce new challenges. These include coordination among decentralized controllers, in-field …
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Development of Dynamic Traffic Signal Control Procedures for Oversaturated Arterials and Genetic Algorithms Solutions
… that their implementation for on-line traffic control is possible. Population size was shown to play a significant role in determining quality of terminal solutions. Based on experiments with DSCA, and with sufficient computational resources, micro-GAs performed best when the population is …
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Mitigating emissions and energy consumption for urban transportation networks : simulation-based signal control strategies
… (SO) algorithm and used to address a signal control problem. First, a framework that combines travel time and fuel consumption in the objective is formulated followed by one combining travel time and various pollutant emissions. The proposed technique couples detailed, stochastic and …
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Improving traffic management efficiency through reinforcement learning-based traffic signal control and citywide transit simulation
… and harms the environment. Enhancing traffic signal control and public transportation are effective solutions. However, prior research has limitations stemming from the absence of real-time reliable data. Recent computer vision systems have made collecting traffic data easier. This thesis …
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MASTraf: a decentralized multi-agent system for network-wide traffic signal control with dynamic coordination
… system have created a need for improved traffic control. From traditional pre-timed isolated signals to actuated and coordinated corridors, traffic control for urban networks has evolved into more complex adaptive signal control systems. However, unexpected traffic fluctuations, rapid changes in …
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Modeling of traffic signal control and transit signal priority strategies in a microscopic simulation laboratory
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2001.
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Evaluation of Crossover Displaced Left-turn (XDL) Intersections and Real-time Signal Control Strategies with Artificial Intelligence Techniques
… engineers and planners to estimate average control delays, and queues. Modeling was conducted on typical geometries over a wide distribution of traffic flow conditions for three different design configurations or cases using VISSIM simulations with pre-timed signal settings. Some comparisons …
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Development of Arrival/departure Based Uniform Delay Model for Left -Turn Traffic at Signalized Intersections
… proposed models then were applied to real-time signal control system for coordinated intersections with protected-plus-permitted left turn phasing. Test results showed that the real-time signal control taking into account the left turn treatment and signal progression can improve the signal …
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Self-Oscillating Unified Linearizing Modulator
… dc-dc converters suffer from the large-signal control-to-output nonlinearity. Without feedback control, the large-signal control-to-output nonlinearity would lead to output overregulation and even damage the components. The control gain is defined as the ratio of output voltage to …
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