This book presents an arterial green-wave synchronous coordination model for bus and non-bus lanes based on platoon dispersion theory. As the traffic light at an upstream intersection change from red to green, the dispersive characteristics of these vehicles moving from upstream to the downstream were analyzed by assuming velocities of two platoon following a normal distribution pattern. The model aims at analyzing relationship between traffic flow, distance between adjacent intersections, and signaling time in order to achieve arterial green-wave synchronous coordination in both the bus and non-bus lanes. To facilitate coordination in a traffic signal control system, the number of vehicles forced to stop at the head of the platoon as well as the number of vehicles trapped at the tail of the platoon were deter-mined and presented in a tabular form for use in the proposed traffic light coordination model. Finally, a numeric computation for the coordination of successive signals is presented to illustrate the validity of the proposed model.
The civil aviation system is a dynamic and complex system involving airlines,
flights, airlines, airports and runways. There are many factors affecting the
safety and efficiency of civil aviation system. Under the circumstance of limited
resources, how to design, optimize and evaluate the resource allocation of civil
aviation system will greatly improve its management science level. However, if
the scheduling scheme of civil aviation system is only prepared manually, it is
not only time-consuming and laborious, but also the experience scheme is
hardly optimal. With the help of big data and artificial intelligence, it is possible
to generate the design and optimization scheme of civil aviation system by using
computers. The main goal of this book is to build mathematical models and
design algorithms for several common types of civil aviation problems from an
operations research perspective. Finally, an example is given to verify the validity
of the model and algorithm. Another goal of this book is how to evaluate the
operational efficiency of the civil aviation system, where the different objects
would be scored based on the establishment of evaluation indicators. Finally, an
example is given to verify the validity of this study.