An apparatus is provided that warns a vehicle of a harsh braking-applied vehicle based on information sent from the harsh braking-applied vehicle. The apparatus includes a reception device, a position detection device, a forward side vehicle judgment device, and a warning device. The reception device...http://www.google.ca/patents/US7246000?utm_source=gb-gplus-sharePatent US7246000 - Harsh braking warning system and method, vehicle warning apparatus and method utilizing same, information transmitting apparatus and method utilizing the system and method, server apparatus, program for the system and information recording medium for such a program
