CVRIA Acronyms
 I2V: Infrastructure to Vehicle
 IAP: Intelligent Access Program
 IBC: International Border Clearance
 IBL: Intermittent Bus Lanes
 ICC: Interstate Commerce Commission
 ICE: Immigration and Customs Enforcement
 ICM: Integrated Corridor Management
 ICMS: Integrated Corridor Management Systems
 ID: Identifier, Identification
 IDTO: Integrated Dynamic Transit Operations
 IEC: International Electrotechnical Commission
 IEEE: Institute of Electrical and Electronics Engineers
 IETF: Internet Engineering Task Force
 IFTA: International Fuel Tax Agreement
 IJIS: Integrated Justice Information Systems
 IMA: Intersection Movement Assist
 IMMEP: Integrated Multi-Modal Electronic Payment
 IMT-A: International Mobile Telecommunications Advanced
 INC-ZONE: Incident Scene Work Zone Alerts for Drivers and Workers
 INFLO: Intelligent Network Flow Optimization
 INS: Inertial Navigation System
 IP: Internet Protocol
 IPS: Intrusion Prevention System
 IPsec: Internet Protocol Security
 IRP: International Registration Plan
 IRW: Infrastructure Restriction Warnings
 ISAC: Information Sharing and Analysis Center
 ISIG: Intelligent Traffic Signal System
 ISM: Intelligent Speed Management
 ISMT: Intersection State Memory for Transit
 ISO: International Standards Organization
 ISP: Information Service Provider
 ISTEA: Intermodal Surface Transportation Efficiency Act of 1991 
 ITE: Institute of Transportation Engineers
 ITS: Intelligent Transportation Systems
 IVIS: In-Vehicle Information System