Results 171 to 180 of about 910 (216)

Queueing at unsignalized intersections

Transportation Research Part B: Methodological, 1997
Abstract A general queueing theory model for traffic flow at unsignalized intersections is described and analysed which contains most of the mathematical models developed in the literature as special cases. Thus a consistent approach is presented for obtaining these models from a general viewpoint.
Dirk Heidemann, Helmut Wegmann
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Unsignalized Intersections: Roundabouts

2020
Europe has made extensive use of roundabouts for many decades, and traffic circles, often around significant monuments, have been around for centuries. While some traffic circles and roundabouts have always existed in the U.S., interest in their ability to reduce delays (compared to signalized intersections) and create safer and more efficient flow ...
Elena S. Prassas, Roger P. Roess
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A macroscopic theory for unsignalized intersections

Transportation Research Part B: Methodological, 2007
The following paper presents a dynamic macroscopic model for unsignalized intersections which accounts for time-limited disruptions in the minor stream flow, even in free-flow conditions when the average flow demand is satisfied. It introduces a deterministic fictive traffic light to represent an average alternating sequence of available and busy time ...
Estelle Chevallier, Ludovic Leclercq
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Modeling aggressive driver behavior at unsignalized intersections

Accident Analysis & Prevention, 2007
The processing of vehicles at unsignalized intersections is a complex and highly interactive process, whereby each driver makes individual decisions about when, where, and how to complete the required maneuver, subject to his perceptions of distances, velocities, and own car's performance.
Isam A, Kaysi, Ali S, Abbany
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Delay at Unsignalized Intersections

Transportation Research Record: Journal of the Transportation Research Board, 2008
The estimation of average delay for vehicles at an intersection by analytic methods is based on queuing theory. Because of the variability of traffic demand over time, the estimation of delays for time-dependent flow and capacity—also with a temporary overload—is of primary interest.
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Safe spacing of unsignalized intersections on arterial roads

2009 IEEE/INFORMS International Conference on Service Operations, Logistics and Informatics, 2009
It is well known that limited safety distance and excessive intersections are the main reasons of the increasing traffic accidents on arterial roads. Based on the highway functional classification and intersection control types, the intersection spacing mode is divided firstly to make sure the arterial road access spacing and intersection corner ...
Yongfeng Ma, Jian Lu, Linli Yan
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Delays of Shared-Short Lanes at Unsignalized Intersections

Transportation Research Record: Journal of the Transportation Research Board, 2019
At unsignalized intersections, both on the major street and on the minor street, there may be short turning lanes alongside the through lanes following downstream from one single lane. This combined system is termed a shared-short lane (SSL). Up to now it has only been possible to calculate the capacity of these lanes at the stop line and the capacity ...
Wu, Ning, Brilon, Werner
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Control of autonomous vehicles at an unsignalized intersection

2017 American Control Conference (ACC), 2017
Safety and optimal traffic flow are important priorities in intelligent transportation systems. This paper presents a collaborative method for collision avoidance between autonomous vehicles at an unsignalized intersection. The collision conditions are expressed in terms of the vehicles' speed ratios.
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Limited priority merge at unsignalized intersections

Transportation Research Part A: Policy and Practice, 1999
Abstract The development of a new gap acceptance model based on limited priority for the major stream is discussed. Field observations were carried out to identify the mechanism of the merging process taking place at unsignalized intersections under congested conditions.
Rod J. Troutbeck, Soichiro Kako
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Motorist Yielding to Pedestrians at Unsignalized Intersections

Transportation Research Record: Journal of the Transportation Research Board, 2006
This paper evaluates engineering treatments that can be used to improve the safety of pedestrians crossing in marked crosswalks on busy arterial streets. The research team collected extensive data at 42 study sites in different regions of the country to gauge the effectiveness (as measured by motorist yielding or stopping) of various engineering ...
Shawn Turner, Kay Fitzpatrick, Marcus Brewer, Eun Sug Park   +3 more
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