User equipment, UE, in a vehicle, comprising: a network interface configured to communicate with one or more components in a cellular network; and a processing circuit configured to: receive a warning message comprising a trust value in a trust information parameter field over the cellular network, the warning message including incident information; and characterized by comprising: extract the trust value and at least one other trust parameter associated with the incident information from the warning message, wherein the at least one other trust parameter comprises at least one of: a number of UEs in an area of relevance, a number of the UEs in the area of relevance that have transmitted an alert message including the incident information, a ratio of the number of the UEs in the area of relevance that have transmitted an alert message including the incident information to the number of UEs in the area of relevance, or a time period during which alert messages are received relating to the incident; receive an alert message including additional incident information over a vehicle to vehicle communication interface from another vehicle; re-evaluate the trust value in response to the additional incident information; determine an action related to the incident using the re-evaluated trust value, wherein the action comprises one or more of braking, recalculating a route in the navigation system, or providing a warning to the driver; and perform the action in response to the incident. a network interface configured to communicate with one or more components in a cellular network; and a processing circuit configured to: receive a warning message comprising a trust value in a trust information parameter field over the cellular network, the warning message including incident information; and characterized by comprising: extract the trust value and at least one other trust parameter associated with the incident information from the warning message, wherein the at least one other trust parameter comprises at least one of: a number of UEs in an area of relevance, a number of the UEs in the area of relevance that have transmitted an alert message including the incident information, a ratio of the number of the UEs in the area of relevance that have transmitted an alert message including the incident information to the number of UEs in the area of relevance, or a time period during which alert messages are received relating to the incident; receive an alert message including additional incident information over a vehicle to vehicle communication interface from another vehicle; re-evaluate the trust value in response to the additional incident information; determine an action related to the incident using the re-evaluated trust value, wherein the action comprises one or more of braking, recalculating a route in the navigation system, or providing a warning to the driver; and perform the action in response to the incident. extract the trust value and at least one other trust parameter associated with the incident information from the warning message, wherein the at least one other trust parameter comprises at least one of: a number of UEs in an area of relevance, a number of the UEs in the area of relevance that have transmitted an alert message including the incident information, a ratio of the number of the UEs in the area of relevance that have transmitted an alert message including the incident information to the number of UEs in the area of relevance, or a time period during which alert messages are received relating to the incident; receive an alert message including additional incident information over a vehicle to vehicle communication interface from another vehicle; re-evaluate the trust value in response to the additional incident information; determine an action related to the incident using the re-evaluated trust value, wherein the action comprises one or more of braking, recalculating a route in the navigation system, or providing a warning to the driver; and perform the action in response to the incident.