Low Level Function
6.6.1 Provide Traveller Information Interface

Overview

This Function shall be capable of providing the following facilities:

(1) A HMI through which the Traveller may obtain information about travel conditions.
(2) The ability to provide information for all current modes of travel in the area served by the System, including those not managed by the System, e.g. heavy rail, air and maritime.
(3) The HMI shall enable the Traveller to request output of information and if desired may select criteria for its output.
(4) The HMI shall no enable information to be output without a request from the Traveller.
(5) The ability to obtain the relevant information from the store of Travel Information Data, or if not in the store then through a request from the Produce Travel Information Function.
(6) If the current location is known then the ability to filter the information from the store of Travel Information Data to that which is location specific before output, although the filtering criteria shall be configurable by the Traveller.
(7) The HMI shall enable the Traveller to configure the output so that it can be provided against a map background, or in different languages.
(8) The HMI shall generate the output in a form that is easy to understand and be suitable for those with disabilities.

Functional Requirements

(a) continuously monitor for the receipt of the input data flows
(b) use the map data for travel information and location for information data flows received in (a) to provided digital map data on which to base information requested by the traveller and the current location of the traveller
(c) when in (a) the traveller information request data flow is received, request the information from the store of Travel Information Data using the request travel information data flow
(d) collect the requested information from the read travel information data flow when it is received and process it ready for output to the traveller
(e) when all the information is present in (d) send the requested information to the traveller using the requested travel information data flow.

Diagrams

The Diagram(s) is (are) the diagram(s) where you can find the function :
  • DFD 6.6 Provide Traveller Information
  • Functional Tree of Area 6

    • Parent Higher Level Function

    Input logical dataflows

    Output logical dataflows

    User needs

    Number

    Description

    6.1.0.3
    The system shall be able to provide accurate, credible, timely, and easy to comprehend traffic and travel information where it may be of benefit to the user.
    6.1.0.5
    The system shall enable travellers to plan their trip using their own travel criteria (modes of transport, time of departure/arrival, road selection criteria, etc.).
    6.1.0.6
    The system shall enable travellers to plan their trip according to the needs of their disabilities.
    6.1.2.10
    The system shall be able to provide access information for those travellers with special needs (e.g. physical access, lifts, escalators, parking & toilets, nappy changing rooms, access for (guide) dogs, etc.) at relevant areas, e.g. transit areas.
    6.1.2.11
    The system shall be able to provide information about "Points of Interest", e.g. location, opening times, price of service, nearest transport service points.
    6.1.2.13
    The system shall be able to provide information to travellers so as to influence their choice of destination and/or mode of travel, e.g. to protect the environment of a "Point of Interest", or geographic area.
    6.1.2.6
    The system shall be able to provide road and traffic information adapted to different classes of users, e.g. travellers, radio broadcasters, service operators.
    6.1.2.7
    The system shall provide information using graphical representation or text. Graphical form shall include the use of maps as well as text.
    6.1.2.8
    The system shall provide information in the native language at the output location, and/or from a user selected choice of other appropriate foreign languages.
    7.6.2.13
    The system shall enable a traveller to request and receive, via an in-vehicle device, on-trip information about facilities on, or near, the planned route (e.g. fuel stations, refreshment areas).