The role of on-line urban signal control in congestion and incident detection and management

Accident detection and action system using fuzzy logic theory

“…Section speed is only needed after pinpointing the exact zone that contains the accident. Furthermore, each section must be compared with all the other Proceedings of 2013 International Conference on Fuzzy Theory and Its Application National Taiwan University of Science and Technology, Taipei, Taiwan, Dec. [6][7][8]2013 sections in order to make sure of the input data, this will spot if the accident actually spans over multiple sections or not. After locating the section with the lowest speed it is marked as the one having the accident as it only makes sense for cars that made the accident to be stationary and not moving after the accident.…”

“…The operators in use to tie conditions together are (OR, AND). If there are two conditions or more tied with AND operator then the two conditions must be true to Proceedings of 2013 International Conference on Fuzzy Theory and Its Application National Taiwan University of Science and Technology, Taipei, Taiwan, Dec. [6][7][8]2013 proceed to the next line or block of code. On the other hand if the rules are tied together with OR operator then it's enough to have one condition with true value to proceed to the next line or block of code.…”

“…There are five sections in the road in use for this example therefore there are five sections to check there speed. The important aspect of sections is unlike cross ratio Proceedings of 2013 International Conference on Fuzzy Theory and Its Application National Taiwan University of Science and Technology, Taipei, Taiwan, Dec. [6][7][8]2013 and zones not all the sections must be checked for slow lanes but only the sections relevant to the zone suspected in the road with low cross ratio. This distinction is required as the speed is usually critical and very hard to measure in congested roads.…”

“…[5] Christaine et al in their paper highlight the COSMOS project (Congestion Management Strategies and Methods in Urban Sites) which focuses on the research and strategies for ACID (Automatic Incident and Congestion Detection) and CIM (Congestion and Incident Management) and contribute to the existing Adaptive Traffic Control Systems. [6] Yasar Hawas in his research developed a fuzzy logic for incident detection based on An Integrated System for Incident Management (i -SIM). Its consists of i -SIM-S and i -SIM-FL ; the former is used for virtual detector installations and generate different scenarios indicating various incidents while the latter is used to detect the possibility of the incident.…”

Comparative Study between Traffic Control Methods Using Simulation Software

“…In his formula or algorithm, he used different concepts to calculate the optimum green time for each traffic light in an intersection. Another convenience of Intelligent Traffic Light Control System is the ability to simulate them using software easily with different options in this paper [4], [5], some of the previous methods are discussed including Webster, Equal Interval, Optimum Equal and Dynamic Webster in section two titled as methods explanation and flowcharts. The methods are converted in such a way that they can run on a simulation software of our design.…”