F350 Super Duty vs 3500 Denali vs The Ike Pulling 30k lbs

The way the Ford exhaust brake works on auto is that it tries to hold the vehicle to the speed at which it was going at the time that either the brake or throttle was last released. So if the driver applies the brake pedal to slow to 35 mph and takes his foot off the brake, the exhaust brake will try to maintain 35 mph. If he then steps on the throttle to accelerate to 45 mph and releases the throttle, the exhaust brake will try to maintain 45 mph. In the video the driver could have avoided making additional brake applications and as the truck continued to gain speed it would have triggered an automatic brake application to bring the unit back to 35 mph. The braking is so smooth it is hard to feel where the braking is coming from. During this test the Ford may have done some auto brake applications that Andre and Mr Truck where unaware of. The tell tale sign of automatic brake applications are: 1. the trailer brake controller displays the level of electric trailer braking on the dash, 2. the truck and trailer brake lamps illuminate.