High Level Function 6.3 Support Trip
 Diagram   Definition   
DFD 6.3 Support Trip

DFD 6.3 Support Trip

This is a DFD diagram which provides a description of the function in the ITS environment

Overview

This High-level Function shall provide support for a trip.  During the trip perturbations may come into existence which may influence the performance of the trip. Using the itinerary the consequences are evaluated and corrections are suggested to the on-trip traveller. Also routing instructions and possibly re-routing can be delivered.

It shall be possible for the functionality in this High-Level Function to be used by the Traveller if they are in need of certain information about what is to be expected on the next leg(s) of the trip. In this instance it shall be possible for dedicated questions to be put to the Traffic and Travel Information (TTI) sub-functionality.  Additionally it shall be possible for a "trip skeleton" to be used to extract more accurate and more selective information faster from the Support Trip facility.

Diagrams

The Diagram(s) is(are) the Diagram(s) where you can find the function
  • The first diagram, if exists, is a DFD diagram which provides the context of the function
  • The second Diagram, if exists, is a Functional Tree which provides a hierarchical description of the function into subfunctions
  • DFD 6. Provide Traveller Journey Assistance
  • Functional Tree of Area 6
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    Parent

    Component lower level functions

    The four Functions are linked by single Data Flows and also have single Data Flows that enable them to load and read data from the Data Store. Several Data Flows are provided for the exchange of data with other Areas and with the terminators. The Functions and Data Flows are contained in the DFD for Function 6.3 - DFD 6.3.

    Input logical dataflows

    Output logical dataflows

    User needs

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    Description