# Grade Crossing Signal System
> **US Department of Transportation** · Rule · Published 2006-04-13 · 71 FR 19129
## Document
- **Document number:** 06-55514
- **Category:** other
- **Sub-agency:** US Department of Transportation
- **Federal Register citation:** 71 FR 19129
- **CFR reference:** 49 CFR 234
- **Publication date:** 2006-04-13
## Source
- [Federal Register document](https://www.federalregister.gov/documents/2006/04/13/06-55514/grade-crossing-signal-system)
---
*AI Analytics · CC0 1.0*