Parking Brake Control

A method of using pneumatic logic to control a parking brake comprising:

• flowing brake pipe pressure into a parking brake control module via a brake pipe passageway;
• flowing reservoir pressure into a parking brake control module via a reservoir passageway;
• applying the parking brake when the brake pipe pressure falls to or below a lower brake pipe pressure threshold;
• and
• releasing the parking brake when the brake pipe pressure is above an upper brake pipe pressure threshold and a reservoir pressure is above a reservoir pressure threshold.

A system for controlling a parking brake comprising:

• a brake pipe passageway through which brake pipe pressure flows;
• a parking brake;
• and
• a hold valve comprising a first position and a second position,
• wherein in the first position, the hold valve directs brake pipe pressure to the parking brake, and in the second position, the hold valve prevents brake pipe pressure from flowing to the parking brake.

A system for controlling a parking brake comprising:

• a pipe bracket comprising a brake pipe port and a reservoir port;
• a parking brake control module configured to use pneumatic logic to control the parking brake;
• a brake pipe passageway running from the brake pipe port to the parking brake control module;
• a reservoir passageway running from the reservoir port to the parking brake control module;
• and
• a parking brake in fluid communication with the parking brake control module.