The German automobile club ADAC (Allgemeiner Deutscher Automobil-Club) maintains a heterogeneous fleet of over 1600 service vehicles (units) in order to assist people whose cars break down on their way. All service vehicles are equipped with GPS, which helps to exactly locate each unit in the fleet. In five ADAC help centers (Pannenhilfezentralen) spread over Germany, human operators (dispatcher) constantly assign units to incoming help requests (events) so as to provide for a good quality of service (i.e., waiting times of less 20--60 minutes depending on the system load) and low operational costs (i.e., short total tour length and little overtime costs). Moreover, about 5000 units of service contractors can be employed to cover events that otherwise could not be served in time. This manual dispatching system is now subject to automatization.

The goal of this project is to develop an online dispatching algorithm (in cooperation with the software company Intergraph) that can be used to guarantee quality of service under operational costs that are as small as possible.

Publications

2006
Reoptimization Gaps versus Model Errors in Online-Dispatching of Service Units for ADAC DISAM, 154(13), pp. 1897-1907, 2006 Benjamin Hiller, Sven Krumke, Jörg Rambau BibTeX
Online-Dispatching of Automobile Service Units
2004
Reoptimization Gaps versus Model Errors in Online-Dispatching of Service Units for ADAC ZIB-Report 04-17 (The rev. vers. appeared in: Electronic Notes in Discrete Mathematics Vol. 18, 1 December 2004, 157-163. The final vers. appeared in: Discrete Applied Mathematics 154 (2006) 1897-1907) Benjamin Hiller, Sven Krumke, Jörg Rambau PDF
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Online-Dispatching of Automobile Service Units
Reoptimization Gaps versus Model Errors in Online-Dispatching of Service Units for ADAC Latin-American Conference on Combinatorics, Graphs and Applications, Santiago de Chile 2004, T. Liebling, G. Duran, M. Matamala (Eds.), pp. 157-163, Vol.18, ENDM, 2004 Benjamin Hiller, Sven Krumke, Jörg Rambau BibTeX
Online-Dispatching of Automobile Service Units
2002
Making the Yellow Angels Fly: Online Dispatching Of Service Vehicles in Real Time ZIB-Report 02-18 (Appeared in: SIAM News, Vol. 35, No. 4, (2002) pp. 10-11) Martin Grötschel, Sven Krumke, Jörg Rambau, Luis Miguel Torres PDF
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Online-Dispatching of Automobile Service Units
Online-Dispatching of Automobile Service Units ZIB-Report 02-44 (Appeared in: Operations Research Proceedings 2002. Selected Papers of the International Conference on Operations Research (SOR 2002), Klagenfurt, September 2-5, 2002. U. Leopold-Wildburger et al. (eds.) Berlin: Springer 2003. Pp. 168-173) Sven Krumke, Jörg Rambau, Luis Miguel Torres PDF
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Online-Dispatching of Automobile Service Units
2001
Real-Time Dispatching of Guided and Unguided Automobile Service Units with Soft Time Windows ZIB-Report 01-22 (Appeared in: Algorithms - ESA 2002. Proceedings of the 10th European Symposium on Algorithms, Rome, Italy, September 17-21, 2002. R. Möhring et al. (eds.) Berlin: Springer 2002. LNCS 2461, pp. 637-648) Sven Krumke, Jörg Rambau, Luis Miguel Torres PDF
BibTeX
URN
Online-Dispatching of Automobile Service Units