Assembly of brake control appliances of a brake for rail vehicles, with an air duct, a first brake control appliance, at least one air container, a second brake control appliance, a pressure-limiting valve and a switch valve, wherein the second brake control appliance communicates with the first brake control appliance, characterised in that a) the air duct is operated in a first operating position of the assembly of brake control appliances as a main air duct with a first pressure (p HL) of ≤ 5 bar when the second brake control appliance is connected to the air duct by the switched-off switch valve, and the first brake control appliance is controlled by the second brake control appliance in such a way that a conventional HL control is formed with the second brake control appliance; b) the air duct is operated in a second operating position of the assembly of brake control appliances as a main air container duct with a second, constant pressure (p HBL) of approx. 10 bar when the assembly of brake control appliances is moved from the first operating position to the second operating position by the switched-on switch valve, wherein the connection of the second brake control appliance to the air duct is interrupted and the second brake control appliance is connected to the air container via the pressure-limiting valve, and wherein the first brake control appliance communicates with the air duct and performs a direct ep brake control; and the assembly of brake control appliances can be moved from the second operating position back into the first operating position by the switched-off switch valve, wherein the air duct is again operated in the first operating position of the assembly of brake control appliances as the main air duct with the first pressure (p HL) of ≤ 5 bar. a) the air duct is operated in a first operating position of the assembly of brake control appliances as a main air duct with a first pressure (p HL) of ≤ 5 bar when the second brake control appliance is connected to the air duct by the switched-off switch valve, and the first brake control appliance is controlled by the second brake control appliance in such a way that a conventional HL control is formed with the second brake control appliance; b) the air duct is operated in a second operating position of the assembly of brake control appliances as a main air container duct with a second, constant pressure (p HBL) of approx. 10 bar when the assembly of brake control appliances is moved from the first operating position to the second operating position by the switched-on switch valve, wherein the connection of the second brake control appliance to the air duct is interrupted and the second brake control appliance is connected to the air container via the pressure-limiting valve, and wherein the first brake control appliance communicates with the air duct and performs a direct ep brake control; and the assembly of brake control appliances can be moved from the second operating position back into the first operating position by the switched-off switch valve, wherein the air duct is again operated in the first operating position of the assembly of brake control appliances as the main air duct with the first pressure (p HL) of ≤ 5 bar.