Signalized intersections are widely used in today＇s cities where the traffic flows from various directions and the pedestrians have right to pass one by one. In this study, two of the intersections in Konya were inve...Signalized intersections are widely used in today＇s cities where the traffic flows from various directions and the pedestrians have right to pass one by one. In this study, two of the intersections in Konya were investigated, Kule and Nalgacl-Sille signalized intersections. The intersections are important in terms of urban traffic. New cycle times were proposed with the aim to minimize delays and to increase the capacities and level of services in these intersections. The intersections were examined using Sidra Intersection 5.1 software based on the Australian methods. Also, signalization calculations can be made according to the American HCM （Highway Capacity Manual） methods by using the same software. The intersection analyses were performed using both methods based on the current cycle times and optimum cycle times proposed by the methods. The obtained analytical results were compared and some solutions were suggested. After analysis, the obtained values using the Australian and American methods were observed to be close. Additionally, the decrease in the delays and the increase in the capacities at the intersections were generally observed as a result of the proposed cycle times.展开更多
The objective of this study is to determine if installation of roundabouts in a business area or on business corridors can be good for the businesses as well as improve the traffic flow in that area. This objective is...The objective of this study is to determine if installation of roundabouts in a business area or on business corridors can be good for the businesses as well as improve the traffic flow in that area. This objective is achieved by emphasizing on roundabouts located in Kansas cities, particularly Topeka, Kansas. The study concentrates on conducting survey of businesses around the roundabout corridors in different places in the US including Topeka (Kansas), Junction City (Kansas), Newton (Kansas), and Carmel (Indiana). The survey results indicated a positive impact of roundabouts on businesses and traffic movement. Further, as there is no before and after corridor data available for making definite conclusions, a business corridor in Topeka, Kansas is simulated using both SIDRA and VISSIM software to evaluate the impacts of converting several traditional intersections in the corridor to roundabouts. The results from the simulation tasks have showed substantial reductions in vehicle delay and queuing for most of the traffic movements. Therefore, it was concluded that roundabouts on businesses corridor have a positive impact on traffic flows and business.展开更多
文摘Signalized intersections are widely used in today＇s cities where the traffic flows from various directions and the pedestrians have right to pass one by one. In this study, two of the intersections in Konya were investigated, Kule and Nalgacl-Sille signalized intersections. The intersections are important in terms of urban traffic. New cycle times were proposed with the aim to minimize delays and to increase the capacities and level of services in these intersections. The intersections were examined using Sidra Intersection 5.1 software based on the Australian methods. Also, signalization calculations can be made according to the American HCM （Highway Capacity Manual） methods by using the same software. The intersection analyses were performed using both methods based on the current cycle times and optimum cycle times proposed by the methods. The obtained analytical results were compared and some solutions were suggested. After analysis, the obtained values using the Australian and American methods were observed to be close. Additionally, the decrease in the delays and the increase in the capacities at the intersections were generally observed as a result of the proposed cycle times.
文摘The objective of this study is to determine if installation of roundabouts in a business area or on business corridors can be good for the businesses as well as improve the traffic flow in that area. This objective is achieved by emphasizing on roundabouts located in Kansas cities, particularly Topeka, Kansas. The study concentrates on conducting survey of businesses around the roundabout corridors in different places in the US including Topeka (Kansas), Junction City (Kansas), Newton (Kansas), and Carmel (Indiana). The survey results indicated a positive impact of roundabouts on businesses and traffic movement. Further, as there is no before and after corridor data available for making definite conclusions, a business corridor in Topeka, Kansas is simulated using both SIDRA and VISSIM software to evaluate the impacts of converting several traditional intersections in the corridor to roundabouts. The results from the simulation tasks have showed substantial reductions in vehicle delay and queuing for most of the traffic movements. Therefore, it was concluded that roundabouts on businesses corridor have a positive impact on traffic flows and business.
