§236.5. Design of control circuits on closed circuit principle.
49 C.F.R. § 236.5
All control circuits the functioning of which affects safety of train operation shall be designed on the closed circuit principle, except circuits for roadway equipment of intermittent automatic train stop system.
Notes, amendments, and revision history
Authority
Authority: 49 U.S.C. 20102-20103, 20107, 20133, 20141, 20157, 20301-20303, 20306, 20501-20505, 20701-20703, 21301-21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89.
Source
Source: 33 FR 19684, Dec. 25, 1968, unless otherwise noted.