Section 299.611 - Simulated revenue operations(a) The railroad shall conduct simulated revenue operations for a minimum period of two weeks prior to revenue operations to verify overall system performance, and provide operating and maintenance experience.(b) The railroad shall maintain a log of tests conducted during the simulated revenue operations period. This log of tests shall identify any problems encountered during testing, and actions necessary to correct defects in workmanship, materials, equipment, design, or operating parameters.(c) The railroad shall implement all actions necessary to correct safety defects, as identified by the log prior to the initiation of revenue service.