Abstract

Railway capacity ensures effective transportation, supports economic growth and promotes social welfare. With Saudi Arabia witnessing rapid economic growth and urbanization, enhancing the railway system's capacity to meet escalating transportation needs is crucial. This project has investigated and addressed Saudi Arabia Railway (SAR) delay causes specifically in the North railway passenger line, with the aim of improving capacity and creating a more efficient and reliable transportation system. The project aims to enhance the signalling system of Saudi Arabia Railways by optimizing train spacing which allows for more trains to operate safely on a given track. A simulation model of a part of the railway network was built and implemented using ARENA software. An improved model was made by adding a new marker board to adjust the size of the section. This improved model makes it easier to analyse the various factors that influence the decision to add a marker board, thereby contributing to the overall effectiveness of the train system.