Civil Engineering and Architecture 10(6): 2491-2499, 2022 http://www.hrpub.org DOI: 10.13189/cea.2022.100620 The Effect of Level Crossing on the Railroad Line Capacity Budi Rahardjo * , Indrasurya B. Mochtar, Hera Widyastuti Department of Civil Engineering, Sepuluh Nopember Institute of Technology, Indonesia Received June 12, 2022; Revised August 1, 2022; Accepted August 20, 2022 Cite This Paper in the Following Citation Styles (a): [1] Budi Rahardjo, Indrasurya B. Mochtar, Hera Widyastuti , "The Effect of Level Crossing on the Railroad Line Capacity," Civil Engineering and Architecture, Vol. 10, No. 6, pp. 2491-2499, 2022. DOI: 10.13189/cea.2022.100620. (b): Budi Rahardjo, Indrasurya B. Mochtar, Hera Widyastuti (2022). The Effect of Level Crossing on the Railroad Line Capacity. Civil Engineering and Architecture, 10(6), 2491-2499. DOI: 10.13189/cea.2022.100620. Copyright©2022 by authors, all rights reserved. Authors agree that this article remains permanently open access under the terms of the Creative Commons Attribution License 4.0 International License Abstract Changing the railway line from single track to double track will increase the railway line capacity, which means there is an additional number of train trips. Even though it has become a double track, the train trip still passes through a level crossing. If the number of train trips increases, it will result in more frequent level crossing gates being closed, or it can also result in more extended gate closing times. When the level crossing gate is closed, there will be a road traffic conflict; the traffic will stop and form a queue. The more often the level crossing gate is closed, the more road traffic conflicts will increase. By using the Indonesian method for calculating the railway line capacity, the change from single track to double track will increase the railway line capacity by 2.35 times. However, this calculation has not considered the existence of a level crossing, so this study aims to determine the amount of the railway line capacity that can be achieved, which is influenced by the level crossing without significantly increasing road traffic conflicts. The research method was carried out by taking data on train trips and road traffic at the level crossing that exists today, which is still a single line, then simulating the conditions when it has turned into a double track. Simulations are carried out by adding the number of train trips according to the double track capacity. Simulation results showed that at the level crossing, the factor affecting the increase in the railway capacity line is the headway time between the closing of the level crossing gate. For headway time values below or equal with 2.5 minutes, the line capacity increases by 1.5 times the single-line capacity. As for the headway time value above 2.5 minutes, the line capacity increases to 2.35 times the capacity of the single line. From this research, it can be concluded that the level crossing affects increasing the capacity of the railway line. To achieve maximum railroad capacity, the headway time between closing the level crossing gate must be more significant than 2.5 minutes. Keywords Double Track, Railway Line Capacity, Level Crossing 1. Introduction Most of the existing railway network in Indonesia is still single-track railways. In the masterplan of Indonesia's railways [1], the Indonesian Government has planned to turn a single track into a double-track railway. In constructing a double-track railway, the concept used is only to build a new railway next to the existing railway, not including doing work related to removing the level crossing [2]. So although the double-track railway has been used for train trips, there is still a train trip that passes through a level crossing. The change from a single track to a double-track railway can increase the number of train trips, which also means increasing railway line capacity [3]. Based on existing regulations [4], when a train trips through a level crossing, the level crossing gate must be closed, and all highway traffic must temporarily stop. This condition causes traffic delays for highway users [5]. The occurrence of highway traffic delays will form vehicle queues and congestion on the highway. The more train trips, the frequency of trains passing through the level crossing will be more frequent so that the