National ITS Architecture Acronyms

SAE: Society of Automotive Engineers

SAFETEA-LU: Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users

SDO: Standards Development Organization

SENTRI: Secure Electronic Network for Travelers Secure Electronic Network for Travelers Rapid Inspection

SMS: Security Monitoring Subsystem

SPAT: Signal Phase and Timing Message

SSL: Signal System Local

SSM: Signal System Master

SSR: Standard Speed Rail

STIP: Statewide Transportation Improvement Program

STMF: Simple Transportation Management Framework

STMP: Simple Transportation Management Protocol

SVG: Scalable Vector Graphics