US Patent 7676324 Alerting a vehicle operator to traffic movement

Methods, systems and computer program products for alerting a vehicle operator to traffic movement. The methods include identifying a zone around a host vehicle and identifying a target vehicle in the zone. The speed and location of the target vehicle are monitored. An alert is generated in the host vehicle if the target vehicle is moving outside of the zone at a speed higher than a minimum speed and the host vehicle is stationary.