Référence:
CHAPLEAU, Robert, TRÉPANIER, Martin, ALLARD, Bruno (1998). Practical implementations of object-oriented GIS-T, World Conference on Transportation Research, Anvers, Belgique, 15 pages. |
Type:
Conférence avec publication et comité de lecture
Organisme:
World Conference on Transportation Research
Retour
Nouvelle recherche
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Résumé
Transportation geographical information systems (GIS-T) act as a main support for many urban transportation studies. In these actions, topics such as Territory, Demand, Network and Operations are treated according to nodes, links, areas and other topological definitions.
However, elaborating an integrated GIS-T to address all kind of transportation problem is a more delicate question. Numerous experiments in Montreal's case showed some limits of traditional GIS passive tasks. The consideration of large origin-destination surveys data, the need for a more accurate travel information system and some transit interlining application forced a system review.
A more proactive approach of GIS usage require a conceptual extension toward transportation objects and associated methods with imperative consideration: household, persons, trip chains and trips as well as pedestrian, road and transit networks with their dependencies.
This paper will explain the major issues related to GIS-T evolution in the Montreal case. Object-oriented approach and totally disaggregate modeling are used to address the following questions:
- Transportation planning, resources evaluation and O-D survey analysis concerning objects such as transit network, bus route, bus stop, subway, train, household, person and trip.
- Travel information system and path calculation, with pedestrian network, walk path, schedules and variable-geometry network objects.
- Vehicle routing and interlining, including oriented street network, bus garages and bus itinerary objects. |