Project Management Agency:

Use Cases

Here you can find both the Day 1 usecases (to be demonstrated in the first phase of the project) and Day 2 usecases (to be demonstrated at a later phase)

Connected Vehicle (V2X) of Tomorrow

Day 1 Use Cases

Emergency Eletronic Brake Light &

Forward Collision Warning

The Emergency Electronic Brake Light (EEBL) Warning enables a vehicle to broadcast a self-generated emergency brake event to surrounding vehicles. Upon receiving the event information, the receiving vehicle determines the relevance of the event and if appropriate provides a warning to the driver in order to avoid a crash. This application is particularly useful when the driver's line of sight is obstructed by other vehicles or due to bad weather conditions (e.g., fog, heavy rain)

Do Not Pass Warning

The Do Not Pass Warning (DNPW) application is intended to warn the driver of the Host Vehicle (HV) during a passing maneuver attempt when a slower moving Remote Vehicle (RV), ahead and in the same lane, cannot be safely passed using a passing zone which is occupied by opposite lane vehicles (OLRV) in the opposite direction of travel. In addition, the application provides advisory information that is intended to inform the driver of the vehicle that the passing zone is occupied when a vehicle is ahead and in the same lane even if a passing maneuver is not being attempted.

Blind Spot Warning / Lane Change Warning

The BSW/LCW application will warn the driver of the host vehicle (HV) during a lane change attempt if the blind zone the HV intends to switch into is occupied or will soon be occupied by another vehicle (RV) traveling in the same direction. Besides, the application will provide advisory information to the driver whenever a vehicle in an adjacent lane is positioned in a blind spot zone of the HV.

Vulnerable Road User

This use case concerns extension of the safety benefits of V2X technology to pedestrians, bicyclists, and road workers, which are collectively referred to as Vulnerable Road Users (VRUs).  In the more common case, it is assumed that the VRU broadcasts a safety/awareness message (e.g., containing position, speed, trajectory, etc.) that is received by a nearby vehicle, allowing the vehicle to determine if there is a risk of collision and alert the driver

Blind Intersection Movement Assistance

The IMA safety application warns the driver of an HV when it is not safe to enter an intersection due to a crash possibility with RVs crossing the movement path of the HV.

Road Works Warning /

In Vehicle Information

Hazard warning, today often realized in RDS-TMC or TPEG2-Service, is a key element in connected driving. Roadworks warning (RWW) at construction zones is realised using “DEN” messages. Warnings may be emitted just from the safety-trailer using its sign shown. In addition a Traffic Center can add further information on the roadworks layout or the entire situation

Queue Warning & Shock Wave Damping

Bottlenecks lead to capacity reduction, high traffic volume and local disruptions ( e.g. caused by accident) lead to traffic jam. A measure for the homogenization of the traffic flow is an effective reduction of the congestion wave. Shockwave damping (SWD) avoids the creation or extension of shockwaves (sudden traffic jam ends moving upstream against the traffic flow) in high saturated traffic conditions

Follow-me Information

Follow-me information is a convenience feature for people travelling in groups of vehicles. The received information can be used to plan or optimize a route. A potential following vehicle can subscribe to the location information of a leading vehicle which is providing the service. After an authentication at and an authorization of the leading vehicle the position information shall be transmitted. The transmission of that position shall be handled via cellular and direct communication.

Day 2 Use Cases

Cloud Based Sensor Sharing

Sharing of infrastructure & vehicle sensor systems allows for improved detection of relevant objects such as pedestrians, legacy vehicles & obstacles on the road, compared to individual in-vehicle processing. Aside from extending the perception range of each vehicle, information about an object can be enriched, e.g. through classification of objects (pedestrian: child, adult, handicap) or accuracy improvement (position, size, trajectory).

The cloud-based approach enables optimized fusion of information, as well as highly efficient and reliable distribution over cellular radio networks, using e.g. cell broadcasts or over-the-top multicast mechanisms.

Network Availability Prediction

V2V services require that a very high percentage of safety messages are successfully delivered to other traffic participants within a certain deadline. The failure to comply with these requirements renders the road safety service completely useless and even harmful to the users relying on it. Current wireless communication systems are typically not designed to provide reliability at all times and in every reception scenario, as this would result in an overdesigned system with an inefficient air interface in terms of data rate and power consumption. However, the future wireless solutions especially for vehicular networking must be able to guarantee a certain level of reliability almost 100% of the time (e.g., Co-ordinated driving). This mode of operation which is currently not supported by today’s systems is called the Ultra-Reliable Communication (URC).

This use case will demonstrate that the HV can warn the driver/service sufficiently early of any future V2V, V2I or V2N link failures along the trajectory ahead and if necessary, take corrective measures in order to mitigate the risks associated with those link failures.