Regensburg 2010 – scientific programme

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SOE: Fachverband Physik sozio-ökonomischer Systeme

SOE 3: Traffic Dynamics, Urban and Regional Systems II

SOE 3.2: Talk

Monday, March 22, 2010, 10:30–10:45, H44

Braess's paradox at work: does an incomplete highway upgrade pay off? — •Thimo Rohlf — Programme d'Epigenomique, Genopole Campus 1 - Genavenir 6, 5 rue Henri Desbruères, F-91030 Évry cedex, France — Max-Planck-Institute for Mathematics in the Sciences, Inselstr. 22, D-04103 Leipzig, Germany

It is well known that adding new roads to an existing road network may sometimes increase congestion (Braess's paradox). Here, we investigate this problem for the special case of a highway that is two-lane only in a limited section, using the Nagel-Schreckenberg model of traffic flow. We compare fundamental diagrams and average travel time for different relative lengths of the two-lane section with the purely one-lane and purely two-lane case. Further, the influence of different foresight ranges and different types of cooperative behavior at the bottlenecks near the merging points of both lanes is studied.