Metropolitan Transportation Authority (MTA) Assistant Conductor Practice Test

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What do Maximum Authorized Speeds (MAS) signify?

The minimum speed required for a train

The maximum speed authorized by Operating Rules

Maximum Authorized Speeds (MAS) are critical within train operations as they indicate the highest speed that trains are permitted to travel on a specific stretch of track under the prevailing Operating Rules. This is vital for ensuring safety, as it takes into account various factors, including track conditions, train configurations, and potential hazards. By adhering to these maximum speeds, train crews help maintain the safety and efficiency of rail operations.

The other options do not align with the definition of MAS. For instance, the concept of a minimum speed required is not encompassed in MAS, nor do these speeds refer to average operational speeds. Additionally, MAS is applicable to all types of trains and not limited solely to freight, highlighting that knowledge of MAS is essential for all conductors and operators, regardless of the train type they are managing.

The average speed during regular operations

The speed limits for freight only

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