The original Russian title translates to “metro car horn,” while the supplied description identifies the recording with metro construction. No specific transit system, city, vehicle model, or recording date is documented. Online, short railway and industrial horn clips are commonly used to establish a subway setting without lengthy background audio. This recording remains useful because its roughly two-and-a-half-second duration delivers an immediate mechanical warning that fits train videos, construction montages, urban comedy edits, and tense underground scenes.