E9-1-1: Enhanced 9-1-1
EA: Environmental Assessment
EAS: Emergency Alert System
ECC: Elliptic Curve Cryptography
ECDSA: Elliptical Curve Digital Signature Algorithm
E-CFR: Electronic Code of Federal Regulations
ECS: Electric Charging Station
ECSM: Electric Charging Stations Management
ECU: Electronic Control Unit
EDP: Early Deployment Plan
EEBL: Emergency Electronic Brake Light
EIS: Environmental Impact Statement
ELMS: Electrical and Lighting Management Systems
EM: Emergency Management Subsystem (legacy National ITS Architecture)
EMC: Emergency Management Center
EMF: Enhanced Metafile
EMMS: Emissions Management Subsystem (legacy National ITS Architecture)
EMO: Emergency Management Operations
EMS: Emergency Medical Services
EOC: Emergency Operations Center
EP: Equipment Package
EPA: Environmental Protection Agency
ETA: Expected Time of Arrival
ETO: Emergency Transportation Operations
ETSI: European Telecommunications Standards Institute
EV: Emergency Vehicle
EVA: Emergency Vehicle Alert
EVAC: Emergency Communications and Evacuation
EVS: Emergency Vehicle Subsystem (legacy National ITS Architecture)