Results 131 to 140 of about 347 (180)

Unsignalized Intersections

2020
This chapter deals with unsignalized intersections and methods for determining the measures of effectiveness (MOE): waiting times and delays. To this regard, the TRL method for estimating capacity, queues, delays at three-arm intersections is exemplified.
Guerrieri M., Mauro R.
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Examining traffic crash injury severity at unsignalized intersections

Journal of Safety Research, 2010
This study presents multiple approaches to the analysis of crash injury severity at three- and four-legged unsignalized intersections in the state of Florida from 2003 until 2006. An extensive data collection process was conducted for this study.The dataset used in the analysis included 2,043 unsignalized intersections in six counties in the state of ...
Mohamed Abdel-Aty, Kirolos Haleem
exaly   +4 more sources

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
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

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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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
openaire   +1 more source

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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The New German Guideline for Capacity of Unsignalized Intersections

1991
This paper describes the background of a new German guideline for the estimation of the ‘capacity at unsignalized intersections. It contains information on fundamental aspects of the theory as well as a description of the proposed procedure which results from several research projects carried out on behalf of the West German Federal Minister of ...
Werner Brilon, Michael Großmann
openaire   +1 more source