Transportation Dissertation
| Title | Traffic Regulation Model Development and Application in Earthquake Disaster Area |
|---|---|
| Year | 2006 |
| Summary | Student: Chieh-Chao Wen ,2006.01 Institute of Traffic and Transportation National Chiao Tung University When a severe earthquake takes place, the road network system often suffers serious destruction and results in malfunctioning of network systems. In particular, impassable roads and streets block transportation in the periods of evacuation, rescue and restoration. How to maintain traffic functions to facilitate rescue missions and save more lives will turn out to be an essential task during the post-quake period. This thesis aims at developing a decision-making tool that can potentially be used in managing the traffic flows of emergency vehicles and controlling those for private use in earthquake disasters. Methodologically, it addresses a multi-objective, two-modal network flow problem based on the concept of bi-level programming and network optimization theory. The objective of the Basic Model is to allow as many non-rescue vehicles to enter the disaster areas as possible with two requirements: not to disturb necessary rescue vehicles entering the disaster areas and not to exceed the left available roadway capacity. In order to balance travel demand and traffic supply and to find the minimum travel time path for emergency rescue, the Revised Model sets two levels of objectives and takes both the needs of rescue and non-rescue vehicles into consideration. Given the route choice behavior and the most likely OD trip distribution pattern, the lower level objective will meet the above two levels objectives and integrate the CDA (Combined Distribution/Assignment) concept into the minimum link travel times. To prove the feasibility of the model and make it more efficient, the fuzzy interactive algorithm and genetic algorithm (GA) will be applied. Lastly, a hypothetical scenarios analysis shows that this study can create an effective |