Mohammad Jasim Akhtar2022-05-182022-05-184856https://drepo.sdl.edu.sa/handle/20.500.14154/2140Most of the signalized intersection in the Kingdom of Saudi Arabia operate on the basis of OnePhase-per-Approach system. This study was concerned with four-leg intersection with the aim of analyzing and setting guidelines and warrants for the operation of such system.enThesis