signal hours of service
RSIA Hours of Service Requirement Definitions. Terms used in the survey are described below. COVERED EMPLOYEE -An employee specified in 49 U.S.C. Â§ 21101. This includes a train employee, signal employee, or dispatching service employee. 10-HOUR UNDISTURBED REST PERIOD - The minimum off-duty period of 10 consecutive hours that covered employees are generally required to receive without contact by a railroad or other covered employer.