Joint Network And Route Optimization In
Road Evacuation
Author(s)
A. Polimeni & A. Vitetta
Abstract
In this paper a Network and Route Optimization Problem (NROP) in evacuation
conditions is proposed. The variables involved in the problem are discrete (link
topology, routes for rescue vehicles) and continuous (link capacity). The discrete
variables are related to the link direction, lane numbers, lane use and sequence of
users reached by rescue vehicles. The continuous variables, assuming that the
link capacity is a function of the characteristics of the final node in the link, are
related to the intersection control setting. The NROP is hence formulated as a
mixed (discrete/continuous problem) in a congested network considering the
ordinary demand and the evacuation demand. The network topology is optimized
considering the users who evacuate on their own and the rescue vehicles that
move to rescue some users. A heuristic procedure is used to find the best
network configuration.
Keywords: continuous/discrete variables, heuristic approach, vehicle routing.
1 Introduction
The Network Optimization Problem (NOP) consists of finding the optimal
configuration of an existing network optimizing some objectives. Initially, this
problem concerned the link direction and lane allocation optimization (a discrete
problem). It was then extended to capacity optimization (a continuous problem)
defining a Mixed NOP (MNOP). The capacity optimization regards the
optimization of the signal setting at intersections, known as Traffic Signal
Setting Optimization (TSSO).
Matematica, Elettronica e Trasporti, Italy
Keywords
continuous/discrete variables, heuristic approach, vehicle routing.
Related Book
Other papers in this volume
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