Computerized single car test device system

A test system for a brake system of at least one single railroad car, the system comprising:

• at least one car tester including a first connector for connecting a first port to a brake pipe of the car, valves for selectively interconnecting ports of the tester, at least one pressure sensor sensing pressure at one or more of the ports, a communication circuit and a local controller connected to the valves and sensor and programmed to perform a test of the brake system and connected to the communication circuit to transmit test results;
• a central controller remote from and in communication with the car tester for instructing the local controller to perform the test and for receiving the test results;
• and
• wherein the local controller independently performs a pretest of the tester and communicates confirmation of pre-test procedures to the central controller before the central controller instructs the local controller to initiate the test.