Watch a test and explanation of the system: http://www.youtube.com/watch?v=WH4F7J7AAFE On a test track in the new Volvo FH, together with test drivers, you get to experience how the Collision Warning with Emergency Brake system can avoid a rear-end collision, even if it's tight! The tractor-trailer is fully loaded to 40 tons GCW. Animation of the system: http://www.youtube.com/watch?v=LBT3tB_AQ