Gcor Abs System Quiz - 20 Questions

The Automatic Block Signal System (ABS) is a series of consecutive blocks that are controlled by block signals, cab signals, or both. These signals are activated either by a train passing through the blocks or by specific conditions that impact the use of the blocks. This system is used to authorize train movements and ensure the safe and efficient operation of trains on the tracks.

Both answers are correct. According to Rule 8.4, the conductor must either go to the opposite side of the main track or, if unable to do so, stand at least 20 feet from the switch stand. This ensures that the conductor is in a safe position after lining the switch.

Both answers are correct because they both state that it is not okay to transmit the aspect of the signal to another train. The first answer suggests treating the improperly displayed signal as the most restrictive signal, which means the train should follow the instructions of the most restrictive signal in the area. The second answer states that transmitting the aspect of the signal should only be done in an emergency situation. Therefore, both answers imply that it is not acceptable to transmit the signal aspect under normal circumstances.

After passing the Clear block signal to enter the main track, if the conductor radios to stop, Rule 8.9 Item 10K requires the following actions to be taken:
1) After the leading wheels have passed both insulated joints, the spring switch must be lined and locked for main track movement.
2) A job briefing must be performed.
3) When stopping on a spring switch, the slack must be controlled. Therefore, all of the above actions are required in this situation.

The crew member on the UP 6871 must line the switch for an opposing train to leave the main track. However, within ABS, the switch should not be lined until the opposing train has entered the block in advance.

According to Rule 9.2.14, when encountering a signal displaying a red aspect and having a number plate before entering the siding to meet another train, the correct procedure is to proceed at restricted speed. This means that the movement through the siding must be prepared to stop within half the range of vision, as stated in Rule 6.28. Therefore, the train should proceed cautiously and be ready to stop if necessary.

Both answers are correct. According to Rule 8.3/8.8, after lining the switch, the conductor must lock the switch and test the lock to ensure it is secure. Additionally, when authorized in TWC territory, a main track switch may be left open.

In ABS territory, block signal protection is established by a crew member or switch tender opening the switch and waiting for 5 minutes at the switch. This action ensures that the track is clear and no conflicting movements are present, thus providing protection for the train entering the signaled track. This procedure is in accordance with Rule 9.17.

An absolute signal is defined as a block or interlocking signal without a number plate, or designated by an "A" marker. This means that it is a signal that does not have a number plate attached to it or is specifically marked with an "A" marker. This signal is used to indicate certain conditions or instructions to train operators.

Track warrants may be issued to more than one train with the same limits when they are protected by an Automatic Block Signal system and all trains are authorized to proceed in the same direction. This means that multiple trains can be given permission to enter and occupy the same track section as long as they are all moving in the same direction and are protected by the signals of the Automatic Block Signal system. This ensures safe and efficient movement of trains on the track.

In ABS territory, the authority to occupy the main track is given by Rule 6.13 (Yard Limits). This rule establishes the limits of the yard and specifies the conditions under which trains can enter and occupy the main track within those limits. It ensures that trains operating within the yard limits have the authority to occupy the main track without conflicting with other trains.

Both answers are correct. The first answer states that you can pass the absolute signal displaying STOP if a crew member has contacted the train dispatcher and obtained permission to do so. The second answer states that you can pass the signal at restricted speed if authority beyond the signal is joint with other trains or employees.

The 5 minute wait is not required when a block signal governing movement to the signaled track indicates proceed. This means that if the block signal is displaying a clear signal indication, the train can enter the main track immediately without having to wait for 5 minutes. Additionally, block signal protection is not required when operating a spring switch in ABS territory.

Both answers are correct because Rule 9.12.4 states that if you are stopped at a Control Point in TWC/ABS territory, you should contact the dispatcher. Therefore, whether you choose to stop or not, the important action is to contact the dispatcher in this situation.

If a switch to enter the main track is not equipped with an electric lock, a train would be required to establish block signal protection by opening the switch and waiting 5 minutes. This is because without an electric lock, the switch cannot be automatically secured, and therefore the train must manually ensure that the switch is properly aligned and locked before proceeding onto the main track. The 5-minute waiting period allows for any potential conflicts or issues to be resolved before the train proceeds.

According to Rule 9.9A, when the next signal is displaying a Clear indication in ABS territory, the train must proceed at restricted speed. The train must maintain this speed until the next signal is visible, that signal displays a proceed indication, and the track to that signal is clear. This ensures that the train proceeds with caution and is prepared to stop if necessary.

Proceed at restricted speed until the leading wheels have passed the next governing signal or the end of the block system. This means that the train must move at a speed that allows it to stop within half the range of vision, be able to take necessary action to avoid an obstruction, and be able to stop before reaching any train, obstruction, or switch not properly lined and locked. The train must maintain this restricted speed until it has passed the next governing signal or the end of the block system.

According to Rule 9.12.4 C / 9.17, if the absolute signal governing movement to the main track displays a STOP Indication, the train must wait before entering the main. However, in this scenario, the UP 6871 is already between the siding switches, which means it has already passed the signal. Therefore, it will not be necessary for the UP 5267 East to wait 5 minutes before entering the main track.

The train can proceed at restricted speed to couple to its train or a standing cut of cars as long as the track between the engine and cars is clear. The rule states that permission for a reverse movement is not required since it is within the same signaled block. However, after stopping, a crew member must contact the train dispatcher or control operator and obtain authority to pass the STOP indication.

The correct answer states that the signal may not be complied with if a signal or rule requires movement at restricted speed. This means that if there is a signal or rule that mandates the train to move at a slower speed, the train cannot comply with the signal displaying a Clear indication. The train must continue to operate at the restricted speed until it is safe to do otherwise.