This includes, for example, references to truck stops, CB radio, trucker jokes, attractive women, romance, heartbreak, loneliness, stimulants and eugeroics, teamsters, roads and highways, billboards, inclement weather, traffic, ICC, DOT, car accidents, washrooms, etc.
These factors include industrial dispute, the demographic shift from rural to urban areas, economic recessions, changes in the railroads, and the oil embargo.
Occupations, of course, have traditionally provided the raw material and inspiration for folk music in the United States (e.g. riverboat, mining, Great Lakes water commerce, logging, cowboy, railroad, agricultural field work and others), influenced by regional culture as well.
In truck-driving country, such specialized words and terms as truck rodeo, dog house, twin screw, Georgia overdrive, saddle tanks, jake brake, binder and others borrowed from the lingo of truckers are commonly utilized.
Some of that vocabulary has evolved into popular culture and subsequently incorporated into truck-driving country (e.g. “hammer down," “shakey town," “smokey," and "pedal to the metal").