TITLE

Dynamic Estimators of Origin-Destination Matrices Using Traffic Counts

AUTHOR(S)
Cascetta, Ennio; Inaudi, Domenico; Marquis, GĂ­erald
PUB. DATE
November 1993
SOURCE
Transportation Science;Nov93, Vol. 27 Issue 4, p363
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
This paper proposes different "dynamic" estimators using time-varying traffic counts to obtain (discrete) time-varying OD flows or average OD flows. All the estimators can combine counts with other available information, e.g., out-dated matrices and surveys, on a general network and can be formulated as optimization problems. In the case of time-varying OD flows, two types of estimators are proposed. Simultaneous estimators produce joint estimates of the whole set of OD matrices, one for each time slice, whereas sequential estimators produce a sequence of OD estimates for successive time slices. A particular type of simultaneous and sequential estimator (namely Generalized Least Squares) was tested on the Italian Brescia-Padua motorway for which "true" OD flows over a whole day were available. Results were generally satisfactory, showing that also in the "no a priori information" case significant estimates could be obtained.
ACCESSION #
4453899

 

Related Articles

  • An Ensemble Model of Short-Term Traffic Flow Forecasting on Freeway. Hongyan Xiang; Hongling Shu // Applied Mechanics & Materials;2014, Vol. 744-746, p1852 

    This paper puts forward an ensemble model based on uncertainty simulation and multiple model combination for short-term traffic flow prediction. Firstly, the initial condition of traffic flow be simulated by using a normal distribution, which makes a better description of the real traffic flow...

  • A Model to Predict Benefits of Priority Lanes on Freeways. Posner, Edward C. // Transportation Science;May76, Vol. 10 Issue 2, p169 

    An interactive computer-based model is described which permits a reasonable assessment of the decrease in the number of vehicle miles driven when one or several lanes of a freeway are devoted to the exclusive use of "carpools": vehicles carrying at least a specified number of people. The vehicle...

  • Real-Time Freeway Traffic State Estimation Based on Extended Kalman Filter: A Case Study. Yibing Wang; Papageorgiou, Markos; Messmer, Albert // Transportation Science;May2007, Vol. 41 Issue 2, p167 

    This paper presents a case study of real-time traffic state estimation. The adopted general approach to the design of universal traffic state estimators for freeway stretches is based on stochastic macroscopic traffic flow modeling and extended Kalman filtering, which are outlined in the paper....

  • Analysis of the Impact of Fog on Expressway Vehicle Speed. Yuanli Gu; Tongjin Gao // Applied Mechanics & Materials;2014, Issue 587-589, p2045 

    According to the traffic survey data and meteorological data of a certain section between Jinshan and Wuhan on Beijing-HK-Macao Expressway, the change of the weighted average speed and the speed of different vehicle types under different visibility grades was studied, and the linear...

  • Space Optimization of Speed Guidance Control on Urban Expressway. Dashan Chen; Liguo Xia; Dayuan Guo; Xu Bao // International Journal of Control & Automation;Sep2014, Vol. 7 Issue 9, p215 

    Urban expressway plays an important role in the urban road network. It is gradually shifting from large-scale infrastructure-oriented to refinement of traffic management. In order to improve the efficiency and safety of urban expressway, macroscopic dynamic traffic flow model is extended under...

  • Driver-and-Vehicle Response in Freeway Declaration Waves. Forbes, T. W.; Simpson, Miles E. // Transportation Science;Feb68, Vol. 2 Issue 1, p77 

    By a continuous circling technique, 35 mm air photo records were made during 10 peak traffic hours on two sections of an urban freeway, 5 on a four-lane, and S on a three-lane out bound section. Speeds, time headways, distance headways, and response times were analyzed from samples selected from...

  • HIGHWAY HAPPENINGS.  // Overdrive;Mar2005, Vol. 45 Issue 3, p87 

    Cites news events regarding the highways of the U.S. Closure of lanes on interstate-20 in St. Clair County due to civil works; Closure of roads to traffic for one year Between Honolulu and Pearl City due to the widening of the H-1 freeway; Directive for the eastbound bridge in Worcester to carry...

  • Optimum Sample Sizes for Transportation Surveys. Vaughan, Rodney // Transportation Science;May72, Vol. 6 Issue 2, p180 

    Formulas are given for determining the cost and accuracy of a given sampling scheme. Home-based, work-based and roadside surveys are examined. As in any estimation problem, one may optimize either cost or accuracy but not both. For any required accuracy, formulas are given to minimize the survey...

  • The Estimation of an Origin-Destination Matrix form Traffic Counts. Bell, M. G. H. // Transportation Science;May83, Vol. 17 Issue 2, p198 

    In this paper, a model is described that will under certain circumstances yield the most likely origin-destination matrix which is consistent with measurements of link traffic volumes. Given knowledge of the proportionate usage of each link by the traffic between each zone pair, the model...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics