Systems and methods for vehicle-to-vehicle communication

A vehicle system comprising:

• one or more sub-systems including one or more components;
• an inter-vehicle communication system configured to receive and transmit information between a vehicle and one or more other vehicles;
• an in-vehicle computing system including a processor and a storage device, the storage device storing functional safety classification data and instructions executable by the processor to:
• determine trust scores for the one or more sub-systems based on a functional safety classification of the sub-system;
• and
• broadcast the trust scores of the one or more sub-systems to the one or more other vehicles via the inter-vehicle communication system,
• wherein determining the trust scores for the one or more sub-systems based on the functional safety classification includes determining, for each of the one or more sub-systems, a component trust score for each component of the sub-system, the component trust score based on a functional safety classification of each component, and
• wherein the trust score of a sub-system is higher than the component trust score of each of its components if two or more components are operating in parallel such that a failure of one component can be mitigated by operation of another component.

A vehicle system comprising:

• one or more sub-systems including one or more components;
• an inter-vehicle communication system configured to receive and transmit information between a vehicle and one or more other vehicles;
• an in-vehicle computing system including a processor and a storage device, the storage device storing functional safety classification data and instructions executable by the processor to:
• determine trust scores for the one or more sub-systems based on a functional safety classification of the sub-system;
• and
• broadcast the trust scores of the one or more sub-systems to the one or more other vehicles via the inter-vehicle communication system,
• wherein determining the trust scores for the one or more sub-systems based on the functional safety classification includes determining, for each of the one or more sub-systems, a component trust score for each component of the sub-system, the component trust score based on a functional safety classification of each component, and
• wherein the trust score of a sub-system is lower than the component trust score of each of its components if two or more components are operating in series such that a failure of either component leads to a failure of the sub-system.

A vehicle system comprising:

• one or more sub-systems including one or more components;
• an inter-vehicle communication system configured to receive and transmit information between a vehicle and one or more other vehicles;
• an in-vehicle computing system including a processor and a storage device, the storage device storing functional safety classification data and instructions executable by the processor to:
• determine trust scores for the one or more sub-systems based on a functional safety classification of the sub-system;
• and
• broadcast the trust scores of the one or more sub-systems to the one or more other vehicles via the inter-vehicle communication system,
• wherein determining the trust scores for the one or more sub-systems based on the functional safety classification includes determining, for each of the one or more sub-systems, a component trust score for each component of the sub-system, the component trust score based on a functional safety classification of each component, and
• wherein the instructions are further executable to, when a functional safety classification of at least one component of a subsystem is not known, determine the trust score of the sub-system based on whether the at least one component is proven in use based on a number of hours of accumulated component operation of similar components in a plurality of vehicles.

A vehicle system comprising:

• one or more sub-systems including one or more components;
• an inter-vehicle communication system configured to receive and transmit information between a vehicle and one or more other vehicles;
• an in-vehicle computing system including a processor and a storage device, the storage device storing functional safety classification data and instructions executable by the processor to:
• determine trust scores for the one or more sub-systems based on a functional safety classification of the sub-system;
• and
• broadcast the trust scores of the one or more sub-systems to the one or more other vehicles via the inter-vehicle communication system,
• wherein the instructions are further executable to update the trust scores for each sub-system based on a number of hours of operation of each sub-system in the vehicle and a total number of hours of operation of similar sub-systems in a plurality of vehicles.

A vehicle system comprising:

• one or more sub-systems including one or more sensors and one or more actuators;
• an inter-vehicle communication system configured to receive and transmit information between a vehicle and a second vehicle;
• an in-vehicle computing system including a processor and a storage device, the storage device storing a first trust score data including a first trust score for the one or more sub-systems and instructions executable by the processor to:
• receive a second trust score data from the second vehicle via the inter-vehicle communication system, the second trust score data including a second trust score for one or more second sub-systems of the second vehicle;
• and
• adjust one or more actuators of the vehicle system based on the received second trust score data;
• wherein the first trust score and the second trust score are based on functional safety classifications of the one or more sub-systems and the one or more second sub-systems, respectively;
• wherein the inter-vehicle communication system is further configured to receive and transmit information between the vehicle and a third vehicle traveling ahead of the vehicle in an adjacent lane;
• and
• wherein the instructions are further executable to:
• receive a third trust score data from the third vehicle, the third trust score data including a third trust score for each of one or more sub-systems of the third vehicle;
• compare the second trust scores of a first subset of the sub-systems of the second vehicle with the third trust scores of a second subset of the sub-systems of the third vehicle, the second subset corresponding to the first subset;
• and
• adjust one or more actuators of the vehicle based on the comparison.

A method for an advanced driver assistance system for a vehicle, comprising:

• receiving trust score data from a leading vehicle operating in a same lane as the vehicle, the trust score data including a first trust score for a first sub-system of the leading vehicle;
• during a first condition when the first trust score is greater than a threshold, adjusting one or more actuators of the vehicle to maintain a first threshold separation between the vehicle and the leading vehicle;
• and
• during a second condition when the first trust score is less than the threshold, adjusting the one or more actuators of the vehicle to maintain a second threshold separation between the vehicle and the leading vehicle;
• wherein the first trust score is based on a functional safety classification of the first sub-system;
• and
• wherein the first threshold separation is shorter than the second threshold separation.