Notes, summaries, assignments, exams, and problems

Stop Indications in CTC Territory

At a signal displaying a Stop indication, if no conflicting movement is evident, the train will be governed as follows:

• A crew member must immediately contact the Control Operator (CO), unless the train is within Track and Time (T&T) limits or entering T&T limits from any point other than either end.
• When a train receives these instructions: “After stopping (train) at (location) has authority to pass signal displaying Stop indication,” the train must then move at restricted speed.

Manual Interlockings Operating Procedures

At a signal displaying a Stop indication in manual interlockings, the crew must immediately contact the Control Operator (CO).

Before proceeding into or continuing in CTC Territory,... Continue reading "Railway Operating Rules: Signal Indications and Switch Procedures" »

Back Up Movements

Back Up Movements – The crew ensures the movement will not:

• Exceed the limit of the train's authority.
• Exceed the train's length.
• Enter or foul a private or public crossing except as provided by Rule 6.23.1 (provide warning over road crossings).
• Be made into or within yard limits, restricted limits, interlocking limits, drawbridges, railroad crossings at grade, or TB Form B limits.

Back Up Movement (Blocking)

Back Up Movement (Blocking) – Before granting permission for a backup movement to pick up a crew member, do the following:

• Place a block or restrictive tag in the segment where the movement will occur.
• Where overlapping authorities exist, stop all trains within the overlapping limits that will be affected by the move.
• Provide

Railroad Operating Procedures and Signal Compliance

Green Flag or Yellow Flag Clearance

Proceed after a green flag or traveling 4 miles beyond the yellow flag, provided the Train Dispatcher (TD) has verified that no Temporary Block (TB) or Temporary Restriction (TW) is in effect specifying a temporary speed restriction at that location.

Display of Red Flag or Red Light

Red Flag Display: A red flag indicates where trains must stop. When approaching a red flag or red light, the train must stop short of it and not proceed unless the employee in charge gives instructions, including the milepost (MP) location of the red flag/light.

Headlight Failure Protocol

Headlight Failure: If the train's headlight fails, ditch lights must be activated, if so equipped.... Continue reading "Railroad Operating Rules: Signal Indications and Movement Procedures" »

Conditions for Movement Authority

• Have received a proceed signal at the next control point.
• Have occupied the next control point.
• Have reached the end of CTC or Manual interlocking limits.

Relaying Authority to Pass a Stop Signal

When direct radio communication is possible, do not allow another employee to relay the authority to pass a signal displaying a Stop indication. When another employee must relay this information, the employee must be qualified on the GCOR.

Switch Correspondence

A flashing switch indicates the switch is out of correspondence. If any of the following conditions are observed, the switch at that location cannot be considered lined and locked unless otherwise advised by signal personnel or another qualified employee at the location:... Continue reading "Railway Operating Rules: Signals, Switches, and Movement Authority" »

Track Release Time Procedures

When reporting track release time, ensure the following details are communicated:

• Location being reported past or Track Warrant (TW) limits that were released.
• Time Track Warrant (TW) was partially released.
• Question: “Is that correct, over?”

Overlap Circuit Management

When a report is received, or the Train Dispatcher (TD) becomes aware a train has passed an overlap circuit without permission:

• Advise the train involved to stop and remain stopped until further instructions are received from the Chief Dispatcher (CD).
• Immediately notify the Chief Dispatcher (CD).

Contingent Authority Issuance

Do not issue Track Warrant (TW) authority contingent upon a condition. Issue authority only after any authorized train movement... Continue reading "Essential Railway Operating Procedures for Safety" »

Operational Procedures and Authority Confirmation

40.7.2 Repeated Correctly

After issuing authority or any instruction, and it has been repeated back correctly, or the "OK" has been acknowledged, respond with “That is correct”.

Confirming Limits Before Granting Authority

1. If authority can be granted as requested, restate the limits to the requesting employee for confirmation.
2. If confirmation is received from the employee, issue authority with no change in the confirmed limits.
3. If unable to grant authority with limits as requested, state the limits that can be given, asking the employee if they are usable.
4. If changed limits are usable, require the employee to repeat the changed limits to confirm understanding before issuing.

Authorizing Return Movement

Information Display and Verification

When performing functions that require verbal transmission or repetition, the appropriate information must be displayed and used to match against the verbal communication in order to verify accuracy. Examples include transmission of mandatory directives, reporting clear of authority limits, and restoring main track switches through the POS process. When information is displayed on the workstation or a form is accessed, advise readiness to the field employee and restate the authority number involved. If the field employee begins to state information without the appropriate information screen displayed: Do not accept the information.

Trains Occupying Overlapping Limits

ABS Territory

Joint authority may be used

What Is a Creole Language?

A creole language, or simply a creole, is a stable natural language that has developed from a pidgin, i.e., a simplified version of a language. Creoles differ from pidgins because creoles have been nativized by children as their primary language. As a result, they have features of natural languages that are normally missing from pidgins, which are not anyone's first language.

The Etymology of the Word 'Creole'

The English term creole comes from French créole, which is cognate with the Spanish term criollo and Portuguese crioulo. All descend from the verb criar ('to breed' or 'to raise'), which comes from the Latin creare ('to produce, create').^[15] The specific sense of the term was coined in the 16th and 17th centuries... Continue reading "The Formation and Characteristics of Creole Languages" »

Key Terms in Catholic Moral Teaching

• Human Dignity: The value and worth that we share because God created us in His image and likeness.
• Modesty: The virtue by which we think, speak, act, and dress in ways that show respect for ourselves and others.
• Chastity: The virtue by which we use our human sexuality in a responsible and faithful way.
• Moral Decision Making: The process by which we make choices between right and wrong, good and evil, eternal life and sin; for any act to be morally good, its object (nature), intention (purpose), and circumstances (consequences or results) must all be good.
• Natural Law: The law of God within us, which is known by human reason.
• Justice: Respecting the rights of others and giving them what is rightfully theirs; a

Distributed Data Processing Concepts

Centralizing Data in Distributed Systems

How Data is Centralized in DDP

The data is stored centrally but updated or processed at the local (remote) site. Data is retrieved from the centralized data store, processed locally, and then sent back to the centralized data store.

Centralizing Standards in DDP Environments

Importance of Centralized Standards

The relatively poor control environment imposed by the Distributed Data Processing (DDP) model can be improved by establishing some central guidance. The corporate group can contribute to this goal by establishing and distributing appropriate standards for systems development, programming, and documentation to user areas.

Disaster Recovery Strategies

Key Methods for