EVALUATING LINE CAPACITY WITH UIC CODE 406 COMPRESSION METHOD: APPLICATION FOR MALATYA-NARLI LINE
| dc.contributor.author | Bozatlı, Sinem | |
| dc.contributor.author | Şahin, İsmail | |
| dc.date.accessioned | 2022-03-02T13:03:38Z | |
| dc.date.available | 2022-03-02T13:03:38Z | |
| dc.date.issued | 2021-12-01 | |
| dc.description.abstract | While demand for railway transportation in Turkey is in increasing trend parallel to the world, the studies to optimize capacity utilization and allocation has been continuing. This mean that the reliability and quality of train services should be improved. If the volume of train traffic approaches to the line capacity, these measures start to deteriorate, and the emerging bottleneck effects are observed along with capacity allocation issues. In this study, the capacity allocation process in railways is briefly explained and the line capacity calculation method is presented using a case study. Turkish State Railways (TCDD) has become the infrastructure manager (IM) since the amendment in 2013. An incorporation named TCDD Transportation A.Ş. has then been established to operate passenger and freight trains for public benefits. The legal regulation also allows the private companies to operate trains, named train operating companies (TOCs). These companies demand capacity allocation for trains they would operate according to the regulation. The existing line capacities should therefore be known beforehand for the allocation. A capacity calculation is exemplified for the single-track railway line between Malatya and Narlı using the method in UIC Code 406. Mostly freight trains operate on the line having centralized traffic control (CTC) system and automatic block signal system. For daily capacity calculation, a line section, which has the longest occupation time by trains, is determined and model trains, which are representative for similar train groups, are selected. The blocking time stairways of model trains in the calculation section are established and then the minimum headway times between trains running in the same and opposite direction are calculated. The blocking time stairways of 47 trains in the order of timetable are compressed, the total occupation time is calculated as 703.80 min during the day (1440 min), and the mean headway is found approximately 18 min. This means that the occupation rate of the line is 48.88%. In UIC Code 406, the recommended additional (buffer) time for the mixed traffic lines is 67%, accordingly the capacity consumption rate becomes 81.62% (less than 100%). As a result, the existing capacity between Malatya and Narlı is currently sufficient. | tr_TR |
| dc.identifier.isbn | 978-625-7464-54-3 | |
| dc.identifier.uri | http://dspace.yalova.edu.tr/handle/1/163 | |
| dc.language.iso | en | tr_TR |
| dc.subject | TCDD, UIC Code 406, blocking time stairways, capacity allocation, capacity calculation | tr_TR |
| dc.title | EVALUATING LINE CAPACITY WITH UIC CODE 406 COMPRESSION METHOD: APPLICATION FOR MALATYA-NARLI LINE | tr_TR |
| dc.title.alternative | UIC KOD 406 SIKIŞTIRMA YÖNTEMİ İLE HAT KAPASİTESİ DEĞERLENDİRİLMESİ: MALATYA-NARLI HATTI İÇİN UYGULAMA | tr_TR |
| dc.type | Other | tr_TR |
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