§236.56. Shunting sensitivity.
49 C.F.R. § 236.56
Each track circuit controlling home signal or approach locking shall be so maintained that track relay is in deenergized position, or device that functions as a track relay shall be in its most restrictive state if, when track circuit is dry, a shunt of 0.06 ohm resistance is connected across the track rails of the circuit, including fouling sections of turnouts.
Notes, amendments, and revision history
Amendments
[49 FR 3383, 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 3383, Jan. 26, 1984]