All the elements of a transportation system model generally suffer from some approximation. Normally the demand vector is considered the most crucial and problematic element to be simulated, and traffic counts are thus generally used to update it so that the whole model system is able to reproduce the observed link flows. Updating demand vectors using traffic counts has received considerable attention in recent years. In this paper the methodology proposed by Cascetta and Postorino (Fixed point models for the estimation of O-D matrices using traffic counts on congested networks. Transportation Science, Vol. 35, 2001) for updating the demand vector using traffic counts on congested networks is applied to a real case: the OD demand vectors for the city of Naples (Italy). The results show the good capacity of this methodology to reproduce the traffic counts measured. Furthermore, through the estimated OD vectors it was possible to make a structural analysis of transportation demand in Naples.

Updating demand vectors using traffic counts on congested networks: a real case application / Carteni', Armando. - STAMPA. - (2007), pp. 233-243. (Intervento presentato al convegno Urban Transport XIII: Urban Transport and the Environment in the 21st Century tenutosi a Coimbra, Portugal nel 3 - 5 Settembre, 2007) [10.2495/UT070211].

Updating demand vectors using traffic counts on congested networks: a real case application

CARTENI', ARMANDO
2007

Abstract

All the elements of a transportation system model generally suffer from some approximation. Normally the demand vector is considered the most crucial and problematic element to be simulated, and traffic counts are thus generally used to update it so that the whole model system is able to reproduce the observed link flows. Updating demand vectors using traffic counts has received considerable attention in recent years. In this paper the methodology proposed by Cascetta and Postorino (Fixed point models for the estimation of O-D matrices using traffic counts on congested networks. Transportation Science, Vol. 35, 2001) for updating the demand vector using traffic counts on congested networks is applied to a real case: the OD demand vectors for the city of Naples (Italy). The results show the good capacity of this methodology to reproduce the traffic counts measured. Furthermore, through the estimated OD vectors it was possible to make a structural analysis of transportation demand in Naples.
2007
9781845640873
Updating demand vectors using traffic counts on congested networks: a real case application / Carteni', Armando. - STAMPA. - (2007), pp. 233-243. (Intervento presentato al convegno Urban Transport XIII: Urban Transport and the Environment in the 21st Century tenutosi a Coimbra, Portugal nel 3 - 5 Settembre, 2007) [10.2495/UT070211].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/413704
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