Hours of service regulations in road freight transport: an optimization-based international assessment
06 Novembro 2014 ·
- Quem: Thibaut Vidal
- Onde: FGV - Praia de Botafogo, 190, room 317
- Quando: 06 de Novembro de 2014 às 16:00h
Driver fatigue is internationally recognized as a significant factor in approximately 15 to 20% of commercial road transport crashes. In their efforts to increase road safety and improve working conditions of truck drivers, governments worldwide are enforcing stricter limits on the amount of working and driving time without rest. In this presentation, an effective optimization algorithm is described for minimizing transportation costs for a fleet of vehicles considering business hours of customers and complex Hours of Service (HOS) regulations. The algorithm combines the exploration capacities of population-based heuristics, the quick improvement abilities of local search, and efficient labeling procedures for checking compliance with HOS regulations.
This approach is used to evaluate the impact of different HOS regulations from a carrier-centric point of view. Extensive computational experiments conducted for various sets of regulations in the United States, Canada, the European Union, and Australia are conducted to provide an international assessment of the impact of different rules on transportation costs and accident risks. Our experiments demonstrate that European Union rules lead to the highest safety, while Canadian regulations are the most competitive in terms of economic efficiency. Australian regulations appear to have unnecessarily high risk rates with respect to operating costs. The recent rule change in the United States reduces accident risk rates with a moderate increase in operating costs.
Speaker
Thibaut Vidal holds a joint Ph.D in computer science and operations research from the University of Montreal (UdeM), Canada, and Troyes University of Technology (UTT), France. After one year of post-doctorate in Massachusetts Institute of Technology (MIT), he is now visiting researcher at PUC-Rio. His thesis work was recompensed by five dissertation prizes in different scientific societies, and is now mentioned in the honor list of the Dean of Postgraduate Studies, University of Montreal. Thibaut Vidal introduced efficient structural decomposition techniques and heuristic algorithms for critical applications in transportation logistics. His main domains of expertise relate to integer programming, combinatorial optimization, metaheuristics and local search, with applications to logistics and supply chain optimization, production management, resource allocation, and emergency response.
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