With the electric/hydraulic disk brake system we have, the longer the pump runs the higher the pressure seems to build based upon a numerical setting in the hand controller. One experiments on a gravel road to fine tune the wheel lock point setting. Too high a number and it feels like a drag anchor hit the ground.
From using the override controller without the truck brake pedal, I believe the disc trailer brakes would be capable of stopping the whole rig if the truck brakes quit.
WBCCI Life Member 5123, AIR 70341, 4CU, WD9EMC
TV - 2012 Dodge 2500 4x4 Cummins HO, automatic, Centramatics, Kelderman level ride airbag suspension, bed shell
2014 31' Classic model 30 twin beds, 50 amp service, 900 watt solar system, Centramatics, Dill TPMS, disc brakes, 16" tires & wheels