Intersections that cannot respond to traffic density have negativities such as vehicle delays, energy losses due to fuel consumption, increased gases released into the air and environmental vehicle noise. In the study, a geometric arrangement proposal was analyzed in order to eliminate the problems caused by the increase in volume, especially due to the side road participation, in four consecutive roundabouts with a very high traffic volume on Atatürk Boulevard, where the Western Black Sea transit traffic and the urban traffic work together in an urbanized region in the province of Samsun. For this purpose, firstly, current traffic volumes were determined with the help of aerial images, and the current traffic circulation was calibrated by processing them into the “Vissim” traffic simulation software. The road geometry, which is presented as a solution proposal, is simulated in calibrated traffic conditions. In addition, the traffic volume increase was increased by 10% for the current situation and 10% and 20% for the planned design, and a mutual evaluation of the existing and proposed road geometries was made. In the evaluations, important traffic parameters such as delay amounts, network performance evaluations and vehicle travel times were compared as performance measures. According to the results of all analyzes, according to the parameters of queue length, maximum queue length and vehicle delay times, it was observed that 75% of Yeşilyurt, Mimar Sinan and Ömürevleri junction branches and 100% of Türkiş junction branches improved and the traffic continued fluently.