Low Level Function
1.3.2 Identify User

Overview

This Function shall be capable of providing the following facilities:

(1) The ability to identify the Traveller, Driver or the Vehicle.
(2) Having completed the identification, the ability to inform other functionality about the use that is being made of various parts of the road transport infrastructure, e.g. parking occupancy, time of travel between toll gates, etc.

Functional Requirements

(a) continuously monitor for the detection of a vehicle or traveller
(b) when a vehicle or traveller is detected ask for identification
(c) reads this identification
(d) sends the identification to "Access and Credit Control"
(e) extracts the last related transaction for this user from the "transaction" database
(f) computes infrastructure usage information
(g) sends it to other Functions

Diagrams

The Diagram(s) is (are) the diagram(s) where you can find the function :
  • DFD 1.3 Perform Electronic Payment Transaction
  • Functional Tree of Area 1

    • Parent Higher Level Function

    Input logical dataflows

    Output logical dataflows

    User needs

    Number

    Description

    4.1.0.2
    The system shall manage customer data (identification, account, rights of residents, etc.).
    4.1.1.1
    The system shall have a minimum impact on the traffic flow, e.g. a short transaction duration.
    4.1.1.2
    The system shall have a minimum impact on the driving task.
    4.1.1.3
    The system shall not do anything to reduce the safety of either the travellers in the vehicle, or the staff close to the equipment, e.g. in toll booths.
    4.1.3.1
    The system shall be able to exchange financial information between roadside equipment (e.g. toll collection unit) and a moving traveller (e.g. a vehicle).
    4.1.3.3
    The system shall have the maximum security necessary for electronic financial transactions.
    4.1.3.4
    The system shall have a low number of incorrect transactions (e.g., non-effective transactions < 1 in 10E-6; erroneous transactions < 1 in 10E-8)
    4.1.3.5
    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.