49 CFR 234.229 - Shunting sensitivity.

Regulations last checked for updates: Feb 08, 2026

Title 49 - Transportation last revised: Feb 03, 2026

View all text of Subpart D [§ 234.201 - § 234.275]

§ 234.229 - Shunting sensitivity.

Each highway-rail grade crossing train detection circuit shall detect the application of a shunt of 0.06 ohm resistance when the shunt is connected across the track rails of any part of the circuit.

authority: 49 U.S.C. 20103,20107,20152,20160,21301,21304,21311,22907; 28 U.S.C. 2461 note; and 49 CFR 1.89

source: 61 FR 31806, June 20, 1996, unless otherwise noted.

cite as: 49 CFR 234.229