49 CFR § 236.513 Rules, Standards, and Instructions Governing the Installation, Inspection, Maintenance, and Repair of Signal and Train Control Systems, Devices, and Appliances

§ 236.513 Audible indicator.

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

(a) The automatic cab signal system shall be so arranged that when the cab signal changes to display a more restrictive aspect, an audible indicator will sound continuously until silenced by manual operation of an acknowledging device.

(b) The audible cab indicator of automatic cab signal, automatic train stop, or automatic train control system shall have a distinctive sound and be clearly audible throughout the cab under all operating conditions.

[49 FR 3386, Jan. 26, 1984]

← § 236.512 Cab signal indication when locomotive enters block where restrictive conditions obtain.§ 236.514 Interconnection of cab signal system with roadway signal system. →