encyclopedia

REACTION TIME

The time used by equipment, operator, or both, that elapses between the moment an action is called for and when the desired result occurs. (NTSC)

READ-BACK TIME

Time issued by the Central Control Facility (CCF) or Yard Control which validates Clearance Cards, Train Orders and Work Permits. Also see Clearance Cards, Train Orders, Work Permits.

READILY AVAILABLE

Defined as willing, interested and capable of providing the proposed service at a comparable cost to the identified clientele in the same service area, with the same hours of frequency, and at the same level of service.

REAL TIME

Rapid transmission and processing of event-oriented data and transactions as they occur, in contrast to being stored and re-transmitted or processed as batches.