In Vehicle Communications

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CB radio. a device that transmits and receives radio signals only within a designated band of frequencies. Compare Citizens Band.  A system of private radio communication built around such a device.

The General Mobile Radio Service (GMRS) is a licensed radio service that uses channels around 462 MHz and 467 MHz. The most common use of GMRS channels is for short-distance, two-way voice communications using hand-held radios, mobile radios and repeater systems

Amateur Radio (ham radio) is a popular hobby and service that brings people, electronics and communication together. People use ham radio to talk across town, around the world, or even into space, all without the Internet or cell phones. ... You can set up a ham radio station anywhere!