What this code covers
Railroad Signal and Warning Devices
Includes
Railroad Gates; Flasher Lights; Block Signals.
Excludes
Semaphore Flag Signals.
Government contracting · April 2025
PSC 6330
RAILROAD SIGNAL AND WARNING DEVICES
Source: GSA, April 2025 PSC manual. This directory includes codes with no end date in that release. Historical notices may use retired codes.