Highway Patrol stars Broderick Crawford as Dan Mathews, the gruff and dedicated head of a police force in an unidentified Western state. A signature shot of the series is fedora-wearing Mathews barking rapid-fire dialogue into a radio microphone as he leans against the door of his black and white patrol car. Mathews growls "21-50 to headquarters" and the invariable response is "Headquarters by" (as in, standing by).
Ziv Television Programs was founded by Frederick Ziv in 1948. Ten years later, Ziv TV was a major producer of 1950s and early 1960s first-run syndicated series, including Bat Masterson, The Cisco Kid, Science Fiction Theater, Lock-Up, Sea Hunt, and Ripcord.
Highway Patrol was created by Ziv in response to the California Highway Patrol wanting to be featured in a TV series. However, because Ziv thought that the show needed to have a broader police scope than the real CHP, the generic show name was adopted.