Low Level Function
3.4.1 Monitor Weather Conditions

Overview

This Function shall be capable of providing the following facilities:

(1) The ability to collect data about weather conditions that are relevant to the operation of the road network managed by the System.
(2) The ability for some or all of the data to come from Weather Systems or to be detected using sensors within the road network.
(3) The ability to forward the collected data to other functionality for storage.

Functional Requirements

(a) when the first trigger data flow is received, the data that it contains shall be stored internally
(b) the other input trigger data flow shall be continuously monitored for actual measured weather conditions
(c) at periodic intervals the measured weather conditions shall be converted into digital data and collated with the data received in (a)
(d) when (c) is complete, the data shall be sent to the Manage Environmental Conditions Data function using the trigger output data flow.

Diagrams

The Diagram(s) is (are) the diagram(s) where you can find the function :
  • DFD 3.4 Provide Environmental Information
  • Functional tree 3.4

    • Parent Higher Level Function

    Input logical dataflows

    Output logical dataflows

    User needs

    Number

    Description

    7.1.1.6
    The system shall be able to monitor and record weather conditions (wind, fog, rain level, ice, etc.).
    7.4.1.12
    (X)FCD - The system shall enable a road-side device to send weather and environmental conditions to the TCC road-side device.
    7.5.1.3
    The system shall be able to monitor the current inter-urban traffic and weather/environmental conditions, identify incidents, assess their impact, make short term predictions, and select and initiate an appropriate mitigation strategy.
    7.5.1.4
    The system shall be able to monitor the current inter-urban traffic and weather/environmental conditions for the road network and recommend and/or set an appropriate traffic management strategy.