South Bay Signal LLC is a California SBE railroad signal design firm based in the San Francisco Bay Area. With over 19 years of experience in heavy rail and light rail signaling, we can provide complete signal system design for freight, passenger, and transit applications. Our designers provide strong personalized customer service, from initial design to final "as-built" project completion, designing systems to meet all applicable FRA, AREMA, MUTCD, and local PUC/DOT requirements.

Our capabilities include:

Interlocking Design

Automatic Block Signaling Design

Grade Crossing Warning System Design

Microprocessor Application Logic Design

CAD Drafting (AutoCAD and Microstation)

Preparation Of Factory And Field Cutover Test Procedures

On-Site Support During Factory Testing And Field Cutovers

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South Bay Signal is a member of the American Railway  Engineering and Maintenance Association