2025-09-24 · Bay Area Lions Gate Team
UL 325 Gate Safety Basics: What Every Owner Should Know
What UL 325 actually requires, why older gates often miss the mark, and how to bring a system into compliance.
UL 325 is the U.S. safety standard for automatic vehicular gate systems. In plain language: it defines how an automatic gate has to detect, and respond to, things in its path.
Core requirements
- Primary entrapment protection built into the operator
- Secondary entrapment protection (photo eyes and/or edge sensors) covering each entrapment zone
- Warning signs visible at the gate
- Manual disconnect that's safe to use
Where older gates miss
- Photo eyes missing on one side
- Edge sensors only on the leading edge, not the trailing edge
- Force settings cranked too high to overcome a binding gate
- Faded or missing warning signage
How to fix it
Most non-compliant gates can be brought to standard by adding the missing safety devices, tuning the operator, and adding signage — without replacing the gate or operator.