49 C.F.R. § 236.563 Delay time.
Title 49 - Transportation
Delay time of automatic train stop or train control system shall not exceed 8 seconds and the spacing of signals to meet the requirements of §236.24 shall take into consideration the delay time.
Title 49: Transportation
PART 236—RULES, STANDARDS, AND INSTRUCTIONS GOVERNING THE INSTALLATION, INSPECTION, MAINTENANCE, AND REPAIR OF SIGNAL AND TRAIN CONTROL SYSTEMS, DEVICES, AND APPLIANCES
Subpart E—Automatic Train Stop, Train Control and Cab Signal Systems
Rules and Instructions; Locomotives
§ 236.563 Delay time.