Development of Timetable Using a Communication Based Train Control in the Case of Addis Ababa Light Rail Transit
| dc.contributor.advisor | Yalemzewd, Negash (PhD) | |
| dc.contributor.author | Atsedemariam, Gebeyehu | |
| dc.date.accessioned | 2020-03-08T09:48:03Z | |
| dc.date.accessioned | 2023-11-04T15:17:05Z | |
| dc.date.available | 2020-03-08T09:48:03Z | |
| dc.date.available | 2023-11-04T15:17:05Z | |
| dc.date.issued | 2019-06 | |
| dc.description.abstract | Currently, Addis Ababa light rail transit is using the traditional fixed block signaling system. Fixed block-signaling divides the track into small blocks, which determines how far apart the trains will be kept for safety and how frequently the stations will be serviced. This signaling system of Addis Ababa light rail transit make the headway of the system unnecessarily long which handcuff the operator in terms of the number of trains they can push through the system. On the other hand, in moving block signaling system the train location is continuously updated through the real-time communication between the train and the wayside. There are no fixed block boundaries which allows trains to run closer to each other while ensuring safety. As a result, the operators have two choices to improve their headway and capacity: build more subway lines or squeeze more out of their existing infrastructure by adapting new technologies like Communication based train control. In this thesis, a communication based train control system have been used to develop a new timetable for Addis Ababa light rail transit. The key parameters required to develop a communication based train control systems timetable such as, dwell time, speed, braking distance, emergency braking distance, time for lock switches, and synchronization of trains are discussed in detail and their values are calculated. Depending on those results a new headway for the new timetable is obtained. The validity of newly modeled timetable is tested using Arena simulation software. Finally, the calculated values and simulating results shows that the current headway of Addis Ababa light rail transit can be improved to 8.84 minutes (minimized by 58.93%) from 15 minutes only by changing the signaling system to a moving block based on Communication based train control system. | en_US |
| dc.identifier.uri | http://etd.aau.edu.et/handle/123456789/21013 | |
| dc.language.iso | en_US | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | Addis Ababa Light Rail Transit | en_US |
| dc.subject | Train Control | en_US |
| dc.subject | Timetable | en_US |
| dc.subject | Communication | en_US |
| dc.title | Development of Timetable Using a Communication Based Train Control in the Case of Addis Ababa Light Rail Transit | en_US |
| dc.type | Thesis | en_US |