Low Level Function
5.15.3.3 Classify Host Vehicle Driver Behaviour

Overview

This Function shall be capable of providing the following facilities:

(1) The ability to take responsibility for classifying the expected behaviour of the Host Vehicle (i.e. the Vehicle in which it is operating) according to the status of its Driver.
(2) The ability to receive data about the predicted immediate trajectory of the Host Vehicle from its current location within the carriageway and the road network.
(3) The ability to analyse the data received about the behaviour of the Driver of the Host Vehicle and use this together with the immediate trajectory to classify the future operation of the Vehicle as safe or un-safe.
(4) If the behaviour of the Driver is shown to be un-safe, the ability to send a warning for output to the Driver of the Host Vehicle.

Functional Requirements

(a) continuously monitor for the receipt of any of the input data flows
(b) when the vehicle trajectory for driver behaviour data flow is received in (a) store its contents locally for future use
(c) when the driver status for behaviour classification data flow is received in (a) analyse the driver behaviour and determine if in conjunction with the data received in (b) what the vehicle can be expected to do next and whether its operation can be classified as safe or not
(d) if the driver status for behaviour classification data flow received in (a) is not OK, classify the future vehicle behaviour as un-safe even if the data in (b) shows that the predicted trajectory does not contain an un-safe manoeuvre
(e) if the results of either (c) or (d) is that the vehicle operation is classified as un-safe, determine the possible corrective action(s) that the driver should take to return the vehicle to safe operation
(f) send the result of (e) together with a warning about un-safe behaviour to the Provide Vehicle Trajectory Information to Driver function in the vehicle behaviour warning data flow.

Diagrams

The Diagram(s) is (are) the diagram(s) where you can find the function :
  • DFD 5.15.3 Determine Host Vehicle Situation
  • Functional Tree of Area 5

    • Parent Higher Level Function

    Input logical dataflows

    Output logical dataflows

    User needs

    Number

    Description

    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.