Evaluation of Count Location Selection Methods for Estimation of O-D Matrices
- 1 July 1998
- journal article
- research article
- Published by American Society of Civil Engineers (ASCE) in Journal of Transportation Engineering
- Vol. 124 (4), 376-383
- https://doi.org/10.1061/(asce)0733-947x(1998)124:4(376)
Abstract
Origin-destination (O-D) trip matrix estimation from traffic count surveys is regarded as the most economical and effective methodology in road network analysis for transport planning and traffic management. Despite the numerous mathematical estimation techniques previously developed, the fundamental procedure of selecting count locations itself is a prime determinant in the quality of the ultimate estimation and deserves more in-depth exploration. In this paper, some existing methods being adopted in practice are reviewed. Two basic rules are established based on previous works and are formulated in a linear programming model to determine the best survey locations for O-D estimation. However, technical problems will be incurred when applied to a large network with huge number of variables involved. The proposed maximal O-D selection method is proved to provide results with a comparable level of reliability, and a sensitivity test is conducted with different objective functions to verify this proposed strategic algorithm. This paper examines the efficiency of additional link counts for O-D estimation and recommends an efficient data collection method. The models and algorithms are illustrated with numerical examples.Keywords
This publication has 6 references indexed in Scilit:
- Optimal traffic counting locations for origin–destination matrix estimationTransportation Research Part B: Methodological, 1998
- An analysis of the reliability of an origin-destination trip matrix estimated from traffic countsTransportation Research Part B: Methodological, 1991
- The estimation of origin-destination matrices by constrained generalised least squaresTransportation Research Part B: Methodological, 1991
- Inferences on trip matrices from observations on link volumes: A Bayesian statistical approachTransportation Research Part B: Methodological, 1983
- The Estimation of an Origin-Destination Matrix from Traffic CountsTransportation Science, 1983
- The most likely trip matrix estimated from traffic countsTransportation Research Part B: Methodological, 1980