CORRECT ANSWERS
PTC system implementation was mandated by which of the following? - CORRECT
ANSWER The Railroad Saftey Improvement Act of 2008
The PTC system is compromised of how many subsystems? - CORRECT ANSWER 4
Which of the events below will NOT cause a penalty brake application? - CORRECT
ANSWER One of the three CPUs fail
Which subsystem provides information on roadway appliances and conditions? - CORRECT
ANSWER Wayside Segment
What does the Communications segment provide? - CORRECT ANSWER Communication
between the back office, wayside and locomotive segments
With which medium does a WIU communicate with the locomotive TMC as the locomotive
approaches? - CORRECT ANSWER Satellite/GPS
Which purpose does the CDU serve? - CORRECT ANSWER Provides a graphical user
interface for the operator.
What is the purpose of the IOC harness? - CORRECT ANSWER Houses the EEPROM and
connects the TMC to various systems.
The switches on the Cutout Switch Module cut in or cut out which functions? - CORRECT
ANSWER Penalty, Emergency and Horn.
Which is the correct input/output range of the power supply? - CORRECT ANSWER Converts
50-90VDC to 13.6VDC