MAKKAH — The Custodian of the Two Holy Mosques Institute for Hajj and Umrah Research at the University of Umm Al-Qura is conducting a study on the city's traffic movement, major intersections and ways to improve the flow of traffic. The dean of the institute, Dr. Abdulaziz Srouji, said that the study is being conducted in several stages and added that the institute carries out numerous studies every year aimed at raising the level of services provided to visitors of the Grand Mosque.