Low Level Function
5.12.7 Communicate with In-vehicle Systems

Overview

This Function shall be capable of providing the following facilities:

(1) The ability to provide an interface between the systems inside the Vehicle and other functionality in the Host Vehicle.
(2) The ability to extract a variety of data from the Vehicle Systems through a "read only" interface, so that the integrity and safety of the systems themselves and the Vehicle cannot be compromised.
(3) The ability to continuously analyse the data from the Vehicle Systems and provide the relevant parts to other functionality in the Host Vehicle.

Functional Requirements

(a) continuously monitor for the receipt of the data flows from vehicle systems, the data flows from other functionality in the Provide Advanced Driver Assistance Functional Area containing data that is to be sent to vehicle systems and data flows containing inputs to vehicle systems from other functionality outside the Provide Advanced Driver Assistance Functional Area
(b) when in (a) the input data flow from the vehicle systems is received, analyse its contents and send it in the appropriate data flows to other functionality in the system
(c) when in (a) any of the input data flows from other functionality in the system are received, collate the data and send it to the vehicle systems in the output data flow
(d) when in (a) any of the input data flows from other functionality outside the Provide Advanced Driver Assistance Functional Area are received, collate the data and send it to the vehicle systems in the output data flow.

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

    7.4.1.20
    Hazard Detection - The system shall be able to determine that the host vehicle is partially occupying an adjacent lane for a short time, e.g. due to manoeuvre round a sharp bend, or lane width reductions.
    7.4.1.21
    Hazard Detection - The system shall be able to detect the presence of fire or smoke on the host vehicle.
    7.4.1.22
    Hazard Detection - The system shall enable the host vehicle to send information about its own safety behaviour (i.e. whether or not the vehicle was being driven in an unsafe manner, e.g. excessive speeding, swapping of lanes, overtaking, driver inattention) to a road-side device.
    7.4.1.3
    (X)FCD - The system shall be able to determine the relative position of the host vehicle on a road (e.g. lane, distance from a datum point) at all times (urban, inter-urban, tunnels etc.).
    7.4.1.4
    (X)FCD - The system shall be able to obtain information (values and status) from the host vehicle’s systems (e.g. ABS, ESP, Longitudinal and Lateral Acceleration, Speed, Wipers) without affecting the safe functioning of those systems.
    7.4.1.9
    (X)FCD - The system shall be able to send XFCD from the host vehicle to a road-side device.
    7.4.2.2
    The system shall be able to warn drivers in a timely manner of self-reporting ghost drivers via an in-vehicle display.
    7.4.2.3
    The system shall be able to detect that the host vehicle is travelling in the wrong direction along a “one-way” road (i.e. a ghost driver), and warn/advise that driver to correct the situation.
    7.4.4.12
    The system shall be able to compare the reported speed of a vehicle with the current legal speed limit and display a warning to the driver, via a road-side device, if its current speed is greater than the legal speed limit.
    7.4.4.13
    The system shall be able to compare the reported speed of a vehicle with the current recommended speed limit and send a warning to that vehicle for display to the driver, via an in-vehicle device, if its current speed is greater than the recommended speed limit.
    7.4.4.14
    The system shall be able to compare the reported speed of a vehicle with the current recommended speed limit and display a warning to the driver, via a road-side device, if its current speed is greater than the recommended speed limit.
    7.4.4.5
    The system shall enable the driver of the host vehicle, via an in-vehicle device, to receive safety-related information (e.g. legal speed limit, recommended speed limit) from other vehicles in the vicinity.
    7.4.6.15
    The system shall be able to advise the driver, via an in-vehicle device, of a recommended speed and distance from the vehicle ahead, based on the speed and characteristics (e.g. mass, load being carried) of the host vehicle and of the vehicle ahead.
    7.5.1.12
    The system shall enable the driver to store data relating to the characteristics of the host vehicle for that trip (e.g. loaded weight, hazardous goods, (trailer) dimensions).
    7.5.1.13
    The system shall be able to determine the characteristics of the host vehicle (e.g. Type, (Total) weight, Width, Length (including trailer)).
    7.5.1.14
    The system shall enable the host vehicle to receive information from other vehicles about the goods being carried by those vehicles.
    7.6.1.1
    The system shall be able to detect that the host vehicle has been involved in an indecent/accident and to call the emergency services either automatically or on command of the driver/passenger (eCall)
    8.2.0.1
    The system shall provide support for direct or indirect assistance for the driving task.
    8.2.1.1
    The system shall be able to inform another vehicle when the host vehicle  has detected that a collision is imminent.
    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.
    8.2.3.1
    The system shall provide support to create a platoon of vehicles, in particular trucks ("Electronic Towbar" or "Road Train").
    8.2.5.1
    The system shall provide support to limit the speed of a vehicle automatically to the a given, but variable, maximum (intelligent speed adaptation)
    8.3.0.1
    The system shall be able to provide the driver with assistance in longitudinal separation from other vehicles in, or entering, the host vehicle's lane.
    8.3.1.2
    The system shall provide support to warn the driver when the vehicle in front is too close.
    8.3.1.3
    The system shall be able to determine a safe vehicle trajectory relative to the lane/road boundaries.
    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.
    8.4.1.1
    The system shall provide support to warn the driver if the host vehicle moves towards a volume of road space that is about to be occupied, or already occupied, by another road user.
    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.
    8.4.2.2
    The system shall be able to provide support to warn the driver when the vehicle approaches or exceeds the lane boundaries.
    8.5.0.1
    The system shall minimise the risk of an accident due to the impaired alertness of the driver.
    8.5.0.4
    The system shall be able to warn surrounding drivers that this driver has a problem.
    8.5.1.2
    The system shall be able to detect that the vehicle has been involved in an accident, identify its location, and initiate an 'eCall' automatically.
    8.5.2.1
    The system shall be able to manoeuvre the vehicle to the roadside automatically, when the driver does not respond.
    8.5.3.4
    The system shall be able to collect information about the vehicle and its environment for other organisations to use, i.e. probe or floating car data.
    8.5.7.1
    The system shall be able to provide support for detecting that the vehicle is not being used properly, e.g. being stolen.
    9.5.7.1
    The system shall enable the driver to store data relating to the characteristics of the host vehicle for that trip (e.g. loaded weight, hazardous goods, (trailer) dimensions).
    9.5.7.2
    The system shall be able to determine the characteristics of the host vehicle (e.g. Type, (Total) weight, Width, Length (including trailer)).
    9.5.7.3
    The system shall enable the host vehicle to receive information from other vehicles about the goods being carried by those vehicles.