AL SHEHHI, AISHAH HASSAN OBAID2018-06-112018-06-112018-032015117022http://bspace.buid.ac.ae/handle/1234/1146DISSERTATION WITH DISTINCTIONSince the World Economic Forum sets in 2004 the first Global Competitiveness Index that list countries according to several indicators, one of which is the infrastructure index, that consists of nine secondary axes, one of which is road quality index, and that the UAE is seeking to raise the standards of global competitiveness and ensure the highest levels of road safety. This research aligns with the objectives of the UAE in reducing the incidence of irrigated incidents on the network of federal roads associated with the level of lighting at night, Therefore This research examines lighting quality and its impact on car accidents at night by exploring the effects of lighting properties such as boom angle, pole height, number of luminaries, and pole arrangements on the number of night-time accidents. The case study subjects for research and analysis were selected based on a group of factors and examined using quantitative methods to enable the researcher to rank roadway improvements from most to least important. These improvements include changing the lighting systems on roadways from High-Pressure Sodium (HPS) to Light-Emitting Diodes (LEDs), a conclusion reached by studying lighting measurements and comparing them to British standards applied in infrastructure construction while considering economic and energy consumption factors. The research concludes with the optimum scenario for each proposed parameter and an advanced optimum model created after collecting all optimum scenarios of all phases.enstreet lighting systemfederal roadwaysUnited Arab Emirates (UAE)global competitivenessLight-Emitting Diodes (LEDs)Dissertation