First, from the abstract view, we would like to model the multimodal transport network distinguishing two types
of networks: the private and the public. In the private transport network, only physical nodes are contained whereas
in public transport network, both physical nodes and event nodes are included to account for time tables of public
transport services. All nodes and links in a private transport network are physical links (road segments). A public
transport network includes a stop (e.g., a bus stop or train station) and related events (Pajor, 2009). The top-level
node is a physical node (the stop) while the other nodes are event nodes (arrivals or departures). Each event node
has a link to the stop node and the direction is decided by event type. If the event type is arrival then the direction is
from event node to stop node. If event type is departure, then the direction is reversed. Besides that, all event nodes
are ordered in the way that a higher-level node refers to an earlier event. The directions of links between event nodes
are from an earlier event to a later event. The latter links refer to either waiting or transferring. Another type of link
is a trip sequence link which connects event nodes between stops from an earlier event to later event. These links
represent movement of a public vehicle from one stop to another stop.
First, from the abstract view, we would like to model the multimodal transport network distinguishing two types
of networks: the private and the public. In the private transport network, only physical nodes are contained whereas
in public transport network, both physical nodes and event nodes are included to account for time tables of public
transport services. All nodes and links in a private transport network are physical links (road segments). A public
transport network includes a stop (e.g., a bus stop or train station) and related events (Pajor, 2009). The top-level
node is a physical node (the stop) while the other nodes are event nodes (arrivals or departures). Each event node
has a link to the stop node and the direction is decided by event type. If the event type is arrival then the direction is
from event node to stop node. If event type is departure, then the direction is reversed. Besides that, all event nodes
are ordered in the way that a higher-level node refers to an earlier event. The directions of links between event nodes
are from an earlier event to a later event. The latter links refer to either waiting or transferring. Another type of link
is a trip sequence link which connects event nodes between stops from an earlier event to later event. These links
represent movement of a public vehicle from one stop to another stop.
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