Low Level Function
5.12.12 Collect Road Network Information

Overview

This Function shall be capable of providing the following facilities:

(1) The ability to collect data from the road network in the form of guidance signals.
(2) The data shall be collected from the road pavement, together with an indication of their integrity, and passed on to the relevant in-Vehicle systems.

Functional Requirements

(a) continuously monitor for receipt of guidance data from the road pavement and the road pavement diagnostics from the maintenance organisation
(b) when the first data flow in (a) is received, it shall be stored locally until the second data flow in (a) is received
(c) the second data flow in (a) shall be used to establish the integrity of the first data flow in (a)
(d) if the data from the first data flow in (a) passes the integrity test, the data from both shall be sent to the Communicate with In-vehicle Systems function in the guidance data and road network diagnostics data flows.

Diagrams

The Diagram(s) is (are) the diagram(s) where you can find the function :
  • DFD 5.12 Provide Vehicle Communications Interfaces
  • Functional Tree of Area 5

    • Parent Higher Level Function

    Input logical dataflows

    Output logical dataflows

    User needs

    Number

    Description

    8.2.2.1
    The system shall provide support to control the lateral dynamic behaviour of the vehicle automatically, and keep the vehicle within its current lane of the carriageway.
    8.4.0.1
    The system shall provide support to monitor for hazards involved in lane keeping, lane changing, entering and leaving high speed roads, and overtaking.
    8.4.1.3
    The system shall be able to provide support to determine a safe vehicle trajectory relative to the lane/road boundaries.
    8.4.2.1
    The system shall provide support to detect the position of the vehicle relative to lane boundaries and/or roadway shoulders.