Low Level Function
5.15.4 Provide Vehicle Trajectory Information to Driver

Overview

This Function shall be capable of providing the following facilities:

(1) The ability to take responsibility for the output of particular warning messages to the Driver of the Host Vehicle, i.e. the Vehicle in which it is operating.
(2) A HMI through which these messages can be output to the Driver of the Host Vehicle.
(3) The ability for these messages to warn the Driver that the Host Vehicle is being driven in an unsafe manner, or that it is about to collide with another Vehicle that is nearby.
(4) The ability for the outputs of both messages to be made simultaneously and for possible corrective action to be suggested to the Driver.

Functional Requirements

(a) continuously monitor for receipt of any of the input data flows
(b) when any of the data flows is received in (a) convert the data it contains into a message, format it and output it to the driver in the appropriate data flow
(c) always ensure that the display of the "warning" messages take priority over the display of all other messages.

Diagrams

The Diagram(s) is (are) the diagram(s) where you can find the function :
  • DFD 5.15 Provide In-vehicle Detection
  • Functional Tree of Area 5
  • Parent Higher Level Function

    Input logical dataflows

    Output logical dataflows

    User needs

    Number

    Description

    7.4.1.34
    Traffic Queue Detection - The system shall be able to inform drivers, via in-vehicle and road-side devices, of slow moving obstacles (e.g. person, animal, slow vehicle) and advise on the appropriate action (e.g. speed and lane).
    7.4.1.37
    Hazardous Location Notification - The system shall be able to warn driver, via an in-vehicle device, of adverse driving conditions ahead (e.g. slippery road, low visibility, queuing traffic) and advise on the appropriate action (e.g. speed).
    7.4.1.38
    Hazardous Location Notification - The system shall be able to warn drivers, via a road-side device, of adverse driving conditions ahead (e.g. slippery road, low visibility, queuing traffic) and advise on the appropriate action (e.g. speed).
    7.4.1.39
    Hazardous Location Notification - The system shall be able to warn the driver, via an in-vehicle device, that the host vehicle is about to enter a curve that has been classified as a black spot for that category of vehicle, and recommend a suitable speed and trajectory.
    7.4.1.40
    Hazardous Location Notification - The system shall be able to warn the driver, via an in-vehicle device, that the host vehicle is about to enter a section of road whose surface has less grip than normal (low "mu").
    7.4.1.41
    Hazardous Location Notification - The system shall be able to inform drivers, via an in-vehicle device, of obstacles in the carriageway and advise on the appropriate action (e.g. speed and lane).
    7.4.2.1
    The system shall be able to detect that a (non-self-reporting) vehicle is travelling in the wrong direction along a “one-way” road (i.e. a ghost driver), and warn other vehicles “ahead” of that vehicle.
    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.
    7.4.2.4
    The system shall be able to detect that a vehicle is overtaking (i.e. in the wrong lane) on a two-lane road and that there is another vehicle approaching in that lane, and provide a warning to the drivers of both vehicles via their in-vehicle devices.
    7.4.6.11
    The system shall be able to warn the driver, via an in-vehicle device, that another equipped vehicle is approaching the host vehicle from the front and in the same (partial) lane.
    7.4.6.12
    The system shall be able to warn the driver, via an in-vehicle device, that another equipped vehicle is approaching the host vehicle from the rear in the same (partial) lane and, when possible, provide advice, e.g. change to a safe adjacent lane, accelerate.
    7.4.6.13
    The system shall be able to warn the driver, via an in-vehicle device, that a slower equipped vehicle is ahead of the host vehicle and in the same (partial) lane and, when possible, provide advice, e.g. change to a safe adjacent lane, decelerate, brake.
    7.4.6.14
    The system shall be able to warn the driver, via an in-vehicle device, that there is a stationary object ahead of the host vehicle and in the same (partial) lane and, when possible, provide advice, e.g. change to a safe adjacent lane, brake.
    7.4.6.17
    The system shall be able to warn the driver of the host vehicle, via an in-vehicle device, of any collisions that could occur with other vehicles and/or VRU that are approaching an urban intersection.
    7.4.6.19
    The system shall be able to calculate the trajectory of each vehicles and VRU approaching a T-junction, predict their future trajectories, assess potential conflicts and advise the driver on the minor road when to exit and join the main road.
    7.4.6.2
    The system shall be able to determine that there is a high probability of a collision between the host vehicle and another vehicle.
    7.4.6.21
    The system shall be able to provide advice to the driver approaching a junction, via an in-vehicle device, recommendations in terms of lane, speed, when traffic signal will change.
    7.4.6.22
    The system shall be able to advise a driver, via an in-vehicle device, how to approach a complex urban junction, e.g. speed required to go through green phase, imminent red phase warning, reduce speed to avoid queuing traffic, another vehicle or VRU, recommended lane choice.
    7.4.6.3
    The system shall be able to warn the driver approaching a junction, via an in-vehicle device, of other equipped vehicles approaching that junction.
    7.4.6.5
    The system shall be able to determine that the host vehicle is (about to) change lanes and warns the driver, via and in-vehicle device, if there are other equipped vehicles on potential collision path (e.g. motor-cycle in a blind spot).
    7.4.6.6
    The system shall be able to determine that the host vehicle is (about to) overtake, or turn across the road, and warns the driver, via and in-vehicle device, if there are other equipped vehicles on potential collision path (e.g. motor-cycle in a blind spot).
    7.4.6.7
    The system shall be able to compare the current trajectory of a vehicle with the road geometry and send a warning to that vehicle for display to the driver, via an in-vehicle device, that it is about to depart its lane.
    7.4.6.9
    The system shall be able to compare the current trajectory of a vehicle with the road geometry and send a warning to the drivers of other vehicles that might be affected, via an in-vehicle device, that an oncoming vehicle lane departure into their lane is imminent.
    7.4.7.1
    The system shall be able to warn the driver, via an in-vehicle device, that a VRU has been detected in a dangerous location by a system at the road side.
    7.4.8.1
    The system shall enable drivers to be warned, via an in-vehicle device, that there are one, or more, stationary assistance/emergency vehicles ahead of them.