Letp 14-1 NORAC Cab Signal System

The statement is true because the CCS (Centralized Control System) is indeed connected to the fixed signal system. This connection allows the engineer to receive continuous information about the track's occupancy and condition ahead. This information is crucial for the engineer to make informed decisions and ensure the safe operation of the train.

The explanation for the given correct answer is that according to Rule 554, if a train is operating from a unit that has not been given a departure test, the cab signals must be considered inoperative. In such cases, the train must observe Rule 554, which states that movement with inoperative cab signals, speed control, or automatic train stop must be followed. Therefore, the statement "If necessary en route to operate from an equipped unit that had not been given a departure test, the cab signals MUST be considered inoperative" is true.

When the engine is moving against traffic, pushing cars, or running backward without cab signal apparatus, the cab signals will not indicate conditions ahead. This means that the cab signals, which are used to provide information about the track conditions ahead, will not be operational in these situations. Therefore, the statement is true.

The engineer is responsible for ensuring that the cab signal apparatus is energized and that the audible indicator is functioning correctly before operating the engine. If the audible indicator fails to sound, the engineer must not enter equipped territory and must inform the dispatcher about the situation. This indicates that the given statement is true.

The engineer must notify the Dispatcher or Operator as soon as possible without delaying the train.

When the Cab Signal Indication and Fixed Signal Indication do not conform, it is important for the Engineer to notify the Dispatcher as soon as possible without delay. This is necessary to ensure the safety of the train and to prevent any potential accidents or mishaps. By informing the Dispatcher about the nonconformity, the necessary actions can be taken to address the issue and ensure that the train operates safely. The Engineer must also provide the location and track on which the nonconformity occurred, allowing the Dispatcher to accurately assess the situation and provide appropriate instructions to the Engineer.

The cab signal apparatus on the leading end of the first engine or control car of each train must be tested and confirmed operational within 24 hours before the engine or control car leaves its initial terminal. This ensures that the signal apparatus is functioning properly and will provide the necessary signals and indications to the train operator during the journey. It is important to regularly test and confirm the operational status of the cab signal apparatus to ensure the safety and efficiency of train operations.

The explanation for the given correct answer is that a train not equipped with Cab Signal Apparatus is indeed prohibited from moving, except when authorized by the timetable. In such cases, the train must notify the Dispatcher before entering equipped territory and follow the fixed signal indication, while observing Restricted Speed unless the Dispatcher authorizes Rule 556 for determining Cab Signal Apparatus failure. Therefore, the statement "Train not equipped with Cab Signal Apparatus" is true.

If there is an absent or imperfectly displayed fixed signal, rule 242 applies. According to rule 242, the cab signal indication will only govern movement after the entire train has traveled a distance of one train length or 500 feet, whichever is greater. Therefore, the statement is true.

In emergency situations, the Dispatcher has the authority to allow movement into a block that is already occupied. This means that if there is a critical situation where immediate action is required, the Dispatcher can override the usual protocol and permit movement into a block that would otherwise be prohibited. This is done to ensure the safety and well-being of individuals involved in the emergency.

The Cab Signal System (CSS) Rules apply in situations where they are designated by either the timetable or a bulletin order. This means that the CSS rules must be followed when specified in these documents. The timetable is a schedule of train movements, while a bulletin order is a temporary directive issued to train crews. Both of these documents have the authority to designate when the CSS rules apply, ensuring that train crews are aware of when they need to adhere to these specific rules.

The cab signal should conform to each fixed signal within 6 seconds after a train enters a block. If the fixed signal does not conform the cab signal, the more restrictive indication will govern through the block.

When the CSS is turned off for any reason another departure test must be completed.

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Failure of Cab Signals only occurs en route. The equipment must not leave its initial terminal unless functional.

If the Cab Signal fails en route, the engineer must operate according to Fixed and Cab Signal Operation if it is still operable. They should not exceed 40 MPH unless authorized by the dispatcher under rule 556. They should also not pass any signal requiring a Stop and Proceed unless authorized by the dispatcher. The engineer must notify the dispatcher without delay about the issue. They should consider the failed apparatus as inoperative until it is repaired or tested and found to be functioning properly. The dispatcher will provide a Form D for movement.

The train may be dispatched from a turnaround point governed by the rules that apply to an en route failure because the equipment is in Turnaround Service, meaning it is currently being serviced and checked. Additionally, the Equipment has had a satisfactory Cab Signal test in the last 24 hours, ensuring that the signals are functioning properly. Lastly, there are no mechanical forces on duty at the turnaround point to repair the equipment, indicating that there is no immediate assistance available to fix any issues. Therefore, under these conditions, the train may be dispatched.

552b. When the Cab Signals and Wayside signals disagree the Wayside Signal will govern,

THE MOST RESTRICTIVE signal will apply.

The employee must leave a copy in the locomotive and a signed copy at the test location.

When the Cab Signal changes between fixed signals, several restrictions come into play to ensure the safe operation of trains. Firstly, if the Cab Signal shifts to a more restrictive "Restricting" aspect, the train's engineer must promptly reduce the speed to a cautious "Restricted Speed." Secondly, when an Interlocking Signal requires "Medium Speed" but the Cab Signal shows a more favorable aspect, the train can proceed but must maintain that speed for its length or 500 feet. Thirdly, if the Cab Signal changes from "Restricting" to a more favorable aspect, the train's speed cannot be increased immediately; instead, it must maintain the current speed for a specified distance. Finally, if the Cab Signal changes from "Clear" to "Approach" between fixed signals, the train must reduce speed immediately and approach the next fixed signal at medium speed, unless that signal displays a more favorable aspect. These restrictions prioritize safety and adherence to signal indications during rail travel.

In the context of the NORAC CAB SIGNAL SYSTEM, the Cab Signals are considered to have failed if several specific conditions occur. These conditions include the audible indicator failing to sound, which is a crucial warning signal for train operators. Additionally, if the audible indicator continues to sound even after it has been acknowledged, it indicates a malfunction. The system also flags a failure if the cab signal fails at two fixed signal locations in succession or if the fixed signal being approached is not displayed correctly. Furthermore, any damage or fault occurring in any part of the Cab Signal Apparatus is deemed a failure. These criteria are put in place to ensure the safety and reliability of the signaling system during train operations.

The engineer must report these unusual occurrences on the prescribed form. (End of trip or form 1155)