Annals of Operations Research

, Volume 226, Issue 1, pp 463–478 | Cite as

Characteristics of optimal solutions to the sensor location problem

  • David R. Morrison
  • Susan E. Martonosi


The sensor location problem is that of locating the minimum number of traffic sensors at intersections of a road network such that the traffic flow on the entire network can be determined. In this paper, we provide a new necessary condition on the location of these sensors to enable the traffic flow throughout the network to be computed. This condition is not sufficient in general, but we show that for a large class of problem instances, the condition is sufficient. Many typical road networks are included in this category, and we show how our condition can be used to inform traffic sensor placement.


Traffic flows Sensor location Transportation network design  Network flow Network optimization 



The authors would like to thank Dr. Lucio Bianco, Dr. Giuseppe Confessore, and Dr. Monica Gentili for communications and assistance regarding their previous work on the problem.


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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  1. 1.University of Illinois at Urbana-ChampaignUrbanaUSA
  2. 2.Harvey Mudd CollegeClaremontUSA

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