Disengaging autonomous control of vehicle

A method of controlling a vehicle, comprising:

• providing power to a cut-off valve in fluid communication between an automated control (AC) valve and a shuttle valve, wherein the cut-off valve opens in response to a power signal on a power line, causing fluid communication between the AC valve and the shuttle valve;
• modulating, by a vehicle autonomy system, the AC valve to control a level of pressurized air provided from a pressurized air reservoir to a foundation brake via the AC valve and the shuttle valve;
• and
• in response to an automated disengage signal, closing the cut-off valve to prevent pressurized air from reaching the shuttle valve via the AC valve and permit pressurized air ch the shuttle valve via a pedal valve.

A system for controlling a vehicle, comprising:

• means for providing power to a cut-off valve in fluid communication between an automated control (AC) valve and a shuttle valve, wherein the cut-off valve opens in response to a power signal on a power line, causing fluid communication between the AC valve and the shuttle valve;
• means for modulating, by a vehicle autonomy system, the AC valve to control a level of pressurized air provided from a pressurized air reservoir to a foundation brake via the AC valve and the shuttle valve;
• and
• means for, in response to an automated disengage signal, closing the cut-off valve to prevent pressurized air from reaching the shuttle valve via the AC valve and permit pressurized air to reach the shuttle valve via a pedal valve.