Abstract: A vehicle on-board unit of a host vehicle is configured to communicate with other vehicle to alert the driver of a potential braking situation in a preceding vehicle. The vehicle on-board unit has an incoming message receiving section, an incoming message relevancy section and a driver warning section. The incoming message receiving section receives a preceding vehicle message containing throttle release data of a preceding vehicle located in front of the host vehicle. The incoming message relevancy section performs a relevancy determination of the throttle release data received. The driver warning section selectively alerts a driver of the host vehicle of a potential braking situation of the preceding vehicle based upon the relevancy determination.

Abstract: A vehicle on-board unit of a host vehicle is configured to activate its brake lights upon determining a vehicle traveling condition exists that is indicative of a potentially inadequate safety zone between the host vehicle and a following vehicle. The vehicle on-board unit has a vehicle traveling condition detecting section, an automatic brake light triggering section and a brake light activating section. The vehicle traveling condition detecting section detects the vehicle traveling condition indicative of a potentially inadequate safety zone. The automatic brake light triggering section outputs a brake light activation signal upon determining a predetermined condition has been satisfied based upon the detected vehicle traveling condition. The brake light activating section activates the brake lights without a braking operation being performed upon receiving the brake light activation signal from the automatic brake light triggering section.

Abstract: A vehicle on-board unit of a host vehicle is configured to communicate with other vehicle to alert the driver of a potential braking situation in a preceding vehicle. The vehicle on-board unit has an incoming message receiving section, an incoming message relevancy section and a driver warning section. The incoming message receiving section receives a preceding vehicle message containing throttle release data of a preceding vehicle located in front of the host vehicle. The incoming message relevancy section performs a relevancy determination of the throttle release data received. The driver warning section selectively alerts a driver of the host vehicle of a potential braking situation of the preceding vehicle based upon the relevancy determination.

Abstract: A vehicle on-board unit of a host vehicle is configured to activate its brake lights upon determining a vehicle traveling condition exists that is indicative of a potentially inadequate safety zone between the host vehicle and a following vehicle. The vehicle on-board unit has a vehicle traveling condition detecting section, an automatic brake light triggering section and a brake light activating section. The vehicle traveling condition detecting section detects the vehicle traveling condition indicative of a potentially inadequate safety zone. The automatic brake light triggering section outputs a brake light activation signal upon determining a predetermined condition has been satisfied based upon the detected vehicle traveling condition. The brake light activating section activates the brake lights without a braking operation being performed upon receiving the brake light activation signal from the automatic brake light triggering section.