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Because of its religious significance, Al-Najaf City is considered one of Iraq's most popular tourist destinations. As a result, there is a lot of congestion on its metropolitan streets and crossings. Thus, this study aims to enhance the functionality of a few chosen intersections in the city of Al-Najaf. Three intersections—Al-Salam, Al-Jameea-Wafaa, and Al-Almany Hospital—are chosen with various attributes to accomplish this purpose. Using a video-capturing technique, peak-time field traffic quantities, signal timings, and phasing were ascertained. A satellite picture and field survey were used to identify the geometric design features. Video recording from both fixed and portable cameras is used to compute the traffic volumes needed for the study over six days during peak hours. To ascertain the percentages of noise and pollutants at the majority of the crossings under study, pollution, and noise devices were also employed. As an evaluation tool, the planning transport SIDRA 8 program was employed. With a level of service of F for every intersection, the results indicated a considerable delay in the studied intersections. Following that, recommend a network to enhance LOS and decrease delays at the intersections that were chosen for this investigation. By moving the LOS from F to D and from F to E for several links, the proposed network reduces congestion. The construction of overpasses for the Al-Salam and Jameea-Wafaa crossings is also recommended by this study, as it demonstrates greater improvement than the network option by lowering CO2 emission levels at each of the improved intersections and improving the LOS from F to D or better. [ABSTRACT FROM AUTHOR]