Capacities of Unsignalized Intersections Under Mixed Vehicular and Nonmotorized Traffic Conditions
نویسندگان
چکیده
addition-conflict-flow. However, the previous models and methods gave little or no consideration to nonmotorized movements, and traffic characteristics at unsignalized intersections with only vehicular movements differ from those with vehicular and nonmotorized movements. A research project sponsored by the Ministry of Science and Technology in China was conducted by the authors to assess capacities of unsignalized intersections under mixed traffic conditions. As a result, models were developed to estimate capacities of vehicular movements at TWSC, AWSC, and uncontrolled intersections on the basis of the field data and a traffic conflict method.
منابع مشابه
Effect of Gap Acceptance Behavior of the Right Turning Vehicles on the Major Road Stream for Uncontrolled Three-Legged Intersections under Mixed Traffic Conditions
Uncontrolled intersections are the intersections where there are no external signs or signals to control the movement of vehicles. In mixed traffic conditions priority rules are often violated by the road users. In All-way-stop-controlled intersections (AWSC), the vehicle should stop themselves before they enter the intersection and should check whether any vehicles are present in the other app...
متن کاملI Field Measurements of Capacity and Delay at Unsignalized Intersections
C and delay are two major parameters for evaluating intersection operations. While models and procedures are available to estimate these parameters given some other easily obtainable traffic flow parameters, traffic engineers often have to conduct field measurements to verify the results given by available models and procedures. Capacity and delay models are provided by the 1994 update of the H...
متن کاملIdentification of Hazardous Situations using Kernel Density Estimation Method Based on Time to Collision, Case study: Left-turn on Unsignalized Intersection
The first step in improving traffic safety is identifying hazardous situations. Based on traffic accidents’ data, identifying hazardous situations in roads and the network is possible. However, in small areas such as intersections, especially in maneuvers resolution, identifying hazardous situations is impossible using accident’s data. In this paper, time-to-collision (TTC) as a traffic conflic...
متن کاملA Study of Dynamic Right-turn Signal Control Strategy at Mixed Traffic Flow Intersections
Traffic conflicts among right-turn vehicles (RTVs), nonmotorized vehicles (NMVs) and pedestrians were examined for urban signalized intersections with exclusive right-turn lane. This study proposed an approach to dynamically calculate the duration of the prohibited right-turn for vehicles by using a measure called the Degree of Clustered Conflict (DCC). The process of DCC control includes: 1) q...
متن کاملImpact of Modern Roundabouts on Vehicular Emissions
Vehicular emissions have increased considerably over the years with the increase in traffic. Modern roundabouts can improve traffic flow as well as cut down vehicular emissions and fuel consumption by reducing the vehicle idle time at intersections and thereby creating a positive impact on the environment. The primary focus of this research is to study the impact of modern roundabouts in cuttin...
متن کامل