No. We have engineered the Ready Brake not to activate until you step on the brake pedal of the motorhome. In our Ready Brake we have an oil filled shock absorber and a 250 lbs spring. The weight of the towed vehicle has to over come both of these before it will activate. When traveling down a steep grade the motorhome and the towed vehicle are traveling at the same speed so the Ready Brake will not activate. If you use jake brakes on the motorhome they will not apply enough pressure on the Ready Brake to activate it.