Tesla Autopilot Warning Tones

Occurred on April 26, 2018 / Richmond, Vinginia, USA<br /><br />Info from Licensor: "I was driving the Model X when the right lane ends. I couldn't see the land ending because the truck is blocking the view. The truck did not put on any turn signal, just merged the second the land ended with no warning. Auto Pilot slowed the car a little and then I disabled and went around."