A command from the Automatic Train Supervision (ATS) system to modify acceleration and speed to achieve a desired traffic pattern. The 5 performance levels are: * PL-1 100% acceleration to 100% Automatic Train Protection (ATP) speed limit. * PL-2 100% acceleration to 85% Automatic Train Protection (ATP) speed limit. * PL-3 80% acceleration to 85% Automatic Train Protection (ATP) speed limit. * PL-4 80% acceleration to 75% Automatic Train Protection (ATP) speed limit. * PL-5 50% acceleration to 50% Automatic Train Protection (ATP) speed limit.