49 CFR § 236.377 Rules, Standards, and Instructions Governing the Installation, Inspection, Maintenance, and Repair of Signal and Train Control Systems, Devices, and Appliances

§ 236.377 Approach locking.

Current through Sep 25, 2026 · Read all of Part 236

Approach locking shall be tested when placed in service and thereafter when modified, disarranged, or at least once every two years, whichever shall occur first.

[49 FR 3385, Jan. 26, 1984]

← § 236.376 Mechanical locking.§ 236.378 Time locking. →