Dynamic brake is a {{pll|Braking Overview|braking system}} type designed to aid {{pll|Brake Shoes|mechanical brakes}} when slowing down {{pll|Rail Vehicle Types|trains}}. It is featured by some {{pll|Rail Vehicle Types|locomotives and railcars}}. Dynamic brakes are made possible by the vehicles' specific {{pll|Powertrains Overview|powertrains}} and, because they don't rely on {{pll|Train Brake|train brakes}}, they help reduce wear and friction on the {{pll|Brake Shoes|brake shoes}}.
It is featured by some {{pll|Rail Vehicle Types|locomotives and railcars}}, made possible by their specific {{pll|Powertrains Overview|powertrains}}. Because dynamic brakes don't rely on {{pll|Train Brake|train brakes}}, they help reduce wear and friction on the {{pll|Brake Shoes|brake shoes}}.