Safety of users in road evacuation: planning internal processes and guidelines

Russo, Francesco; Rindone, Corrado

doi:10.2495/ut070781

Cited by 42 publications

(39 citation statements)

References 7 publications

(4 reference statements)

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“…The test required the previous build-up of travel demand [19,20], network and within-day traffi c assignment models [21,22], and the monitoring of the planning process [23,24]. A coordinated set of traffi c signals was then introduced to regulate vehicle access to the evacuation area (Fig.…”

Section: Dynamic Simulationmentioning

confidence: 99%

Within-day traffic assignment and signal setting in road evacuation: a procedure with explicit path enumeration

Marciano¹,

Musolino²,

Vitetta³

2013

Int. J. SAFE

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In the sphere of the SICURO research project, we propose a framework for signal setting design of road intersections with explicit path enumeration. The framework has two main components: an optimization procedure for signal setting design and a within-day simulation procedure to capture effects of signal setting modifi cation on path choice behaviour. This paper describes the elements of the simulation procedure and illustrates some disaggregate results obtained from its application on an experimental test site. Keywords: Evacuation, signal setting design, within-day traffi c assignment. INTRODUCTIONSignalized intersections are critical points of a transport network. Signal setting design is an effective strategy to increase network capacity and to mitigate congestion in urban areas and with particular reference to emergency conditions. However, signal setting design models in literature do not provide solutions that take into account path choice behaviour and there are few examples of development and application of signal setting design models in evacuation conditions.We represent the problem of signal setting design of intersections in a road network as an optimization problem subject to equilibrium constraints. In other words, travel demand fl ows must be consistent with travel times generated by signal setting parameters.Our work is part of the SICURO research project, carried out by the Laboratory for Transport Systems Analysis of the Università degli Studi Mediterranea di Reggio Calabria (Italy). The general objective is risk reduction in urban areas in terms of exposure [1]. Specifi c research lines concern travel demand models [2][3][4], planning processes and guidelines [5][6][7], route design for emergency vehicles [8][9][10], transport supply and travel demand-supply interaction [11].In the sphere of the last research line, we developed a framework for signal setting design of road intersections with endogenous estimation of path fl ows [12]. The framework has two main components: (i) an optimization procedure for signal setting design [13] and (ii) a within-day simulation procedure to capture the effects of signal setting modifi cation on path choice behaviour presented in this paper. This paper is structured into four sections. Section 2 briefl y recalls the proposed framework. Section 3 focuses on the elements of the simulation procedure. Section 4 illustrates some disaggregate results provided by the simulation procedure applied on an experimental test site. The last section reports the fi nal remarks.

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Section: Dynamic Simulationmentioning

confidence: 99%

Within-day traffic assignment and signal setting in road evacuation: a procedure with explicit path enumeration

Marciano¹,

Musolino²,

Vitetta³

2013

Int. J. SAFE

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“…Among these issues, path choice and traffic assignment on a road transportation network are relevant: these topics were previously treated in [2][3][4] and [5]. Some other relevant topics, which will not be treated in this paper, like travel demand models and travel demand simulation [6][7][8][9][10], evacuation planning process and planning tools [11][12][13][14][15], design of paths for emergency vehicles [16][17][18][19][20], were also treated by researchers in emergency conditions and a wide literature is available. The question is related to the capacity of models and methods, usually used in ordinary conditions, to properly simulate transport systems in emergency conditions.…”

Section: Introductionmentioning

confidence: 99%

The role of path choice and traffic assignment models in evacuation

Maio¹

2012

Risk Analysis VIII

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In this paper a state of the art of path choice and traffic assignment models in road emergency conditions is reported. The approaches proposed in literature are classified, distinguishing two approaches for path choice and three approaches for traffic assignment (static, pseudo dynamic and dynamic). In literature, several applications of models in emergency conditions are available: at the beginning models specified in ordinary conditions were applied in emergency conditions. Afterwards, a first generation of models specified in emergency conditions was proposed. After 9/11 and Katrina Hurricane a second generation of emergency conditions models was specified. Evolution of models applied in emergency conditions is presented in this paper: first, models in ordinary conditions are treated; second, models in emergency conditions are treated. In the last ten years several applications of models in emergency conditions have been carried out. Main applications in emergency conditions are summarized in this paper.

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“…In recent years different tools (specific but non integrated simulation models; Decision Support System; real experimentations) have been available to support decision makers in preparing evacuation plans (see [3][4][5][6] and literature inside reported).…”

Section: Introductionmentioning

confidence: 99%