Low Level Function
4.1.8 Calculate PT Service Performance

Overview

This Function shall be capable of providing the following facilities:

(1) The ability to calculate predefined performance for the operation of the PT Vehicles.
(2) The ability for the performance calculations to be based on continuously observed real time data collected from the operating PT Vehicles by other functionality.
(3) The ability for the performance calculations to be initiated by the PT Operator through the PT Operator Interface Function, to which the results shall be automatically sent.
(4) The ability to send the results of the performance calculations to the Optimise Control Action Function.

Functional Requirements

(a) continuously monitor for the receipt of the calculate service performance data flow
(b) when it is received, obtain the data from the store of Real Time PT Vehicle Status Data using the real time vehicle progressing data flow
(c) calculate the resulting current PT vehicle performances modifying it according to any criteria contained in the data flow in (a)
(d) when (c) is complete send the result to the Provide Operator Interface to Mange PT Fleet function using the calculated vehicle performance data flow.

Diagrams

The Diagram(s) is (are) the diagram(s) where you can find the function :
  • DFD 4.1 Monitor PT fleet
  • Functional Tree of Area 4
  • Parent Higher Level Function

    Input logical dataflows

    Output logical dataflows

    User needs

    Number

    Description

    10.1.0.4
    The system shall be able to analyse records of usage and operational data, and passenger surveys, to assist in the planning process.
    10.1.4.3
    The system shall be able to provide an update of arrival/departure information in real-time and present it to travellers of that mode before and during the journey.
    10.2.4.1
    The system shall be able to provide statistics of usage
    10.2.4.2
    The system shall be able to provide statistics on how well it actually satisfies its customers, e.g. response times, for reporting to its users.