§236.309. Loss of shunt protection; where required.
49 C.F.R. § 236.309
A loss of shunt of 5 seconds or less shall not permit an established route to be changed at an automatic interlocking.
A loss of shunt of 5 seconds or less shall not permit the release of the route locking circuit of each power-operated switch hereafter installed.
Notes, amendments, and revision history
Amendments
[49 FR 3385, Jan. 26, 1984]
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.
Amendments
[49 FR 3385, Jan. 26, 1984]