Abstract

The rising levels of carbon dioxide (CO2) emissions, notably from idling vehicles while waiting at traffic lights, have evolved into a pressing global issue that requires urgent attention. This comprehensive research delves into the relationship between the distribution of traffic signals and the emission of carbon in Bisha, Saudi Arabia. . This study investigates the correlation between traffic signal distribution and carbon emissions in Bisha, Saudi Arabia. Data was collected through fieldwork, GPS tracking, and emissions measurements. The research reveals that the city's traffic signals are concentrated on main road axes, contributing to increased traffic congestion and emissions. Private cars dominate the vehicle types, followed by taxis and heavy goods transport. The findings show a significant connection between the city's traffic signal placement and the surge in carbon emissions, particularly in the context of Bisha. The research brings to light that a significant concentration of traffic signals is found along the city's primary roads, worsening traffic congestion and contributing to a substantial increase in carbon emissions. Furthermore, the investigation argues that the leading vehicle category in Bisha consists of private cars, followed closely by taxis and heavy goods transport vehicles. These findings provide a valuable perspective on the environmental and societal consequences of this critical issue.