During speeds 50 mph or above the front of truck will shake violently losing control of steer and breaking. it only takes the edge of a cement transition between regular road and bridge or some basic rough spots to start the violent shaking. during speeds between 35 and 50 after driving over rough road front will shimmy and smoothout. i have had 3 near misses with other vehicles due to the extreme and violent shaking. yesterday was a near miss with a semi-truck, and did not gain control until after crossing over three lanes of i-435 traffic outside of kansas city. i went by ford today, and they have had many complaints for same reason. this is an extreme safety issue. i should have been notified that this model of truck is developing drivability issues that can kill.