The goal of national Vehicle Infrastructure Integration ( VII ) , which uses high speed , high capacity wireless technology , is to enhance highway user safety by allowing " smart " vehicles and highway infrastructure to communicate information to the driver . VII technology can provide a wide range of communications to the driver including safety warning of potential hazards and general traveler information . For commercial vehicles , such high-speed , wireless communications can also be used to improve vehicle productivity and contribute to improved fuel efficiency and reduced CO2 emissions .