Trans. Planning Journal
| Title | A Study on Developing A Multi-Train Simulation Model with Fixed and Moving Automatic-Block Systems |
|---|---|
| Author | Chi-Chung Tao , Song-Han Liu |
| Summary | The Application of high technologies in the field of railways to improve safety and efficiency have become a global trend recently, especially as the Moving Auto-blocked System (MAS) has been promoted in the USA, Europe and Japan. Taiwan Railway Administration (TRA) is often not able to cope with changeable travel demands to increase capacity because it uses the Fixed Auto-blocked System (FAS). It is, therefore, the main purpose of this study to quantify the possible rail traffic flow by comparing MAS and FAS.
The “Song Sang-Hsinchu” line section of TRA is chosen as the empirical case study to verify and validate the proposed simulation model considering the characteristics of running and overtaking behaviors with multiple train classes. First, speed-distance diagrams for each train class are identified by using mathematical formulas derived from analytical models. Then the logical flows of train movements from starting station to end station for time-space diagrams with two different train operation systems are transformed into a simulation program by using C++. Verification and validation proceed step by step to en-sure the simulation model to be almost realistic with statistical proof. The simu-lation scenarios of comparing percentages of total travel time savings with six different train class combinations and four different headways between FAS and MAS are also presented. The results have shown that the percentage of total travel time saving increases gradually depending upon decreasing headway with MAS, no matter how the combination sequences of train classes will be provided. |
| Vol. | 37 |
| No. | 3 |
| Page | 293 |
| Year | 2008 |
| Month | 9 |