I was wrong about Business Comms. I was right as far as bus comms between two parties but not broadcasting to the masses.
RULE 13 - Illegal Communications
{A} You must NOT use a CB station-
[1] in connection with activity which is against federal, state or local law;
[2] to transmit obscene, indecent or profane words, language or meaning;
[3] to interfere intentionally with the communications of another CB station;
[4] to transmit one-way communications, EXCEPT for emergency communications, traveler assistance, brief tests (radio checks) or voice paging;
[5] to advertise or solicit the sale of any goods or services;
[6] to transmit music, whistling, sound effects or any material to amuse or entertain;
[7] to transmit any sound effect solely to attract attention;
[8] to transmit the word "MAYDAY" or use any other international distress signal, EXCEPT when your station is located in a ship, aircraft or other vehicle which is threatened with GRAVE AND IMMINENT danger and you are requesting IMMEDIATE assistance. [9] to communicate with, or ATTEMPT to communicate with, any CB station more than 155.3 miles (250 kilometers) away;
[10] to advertise a political candidate or political campaign (You may use your CB radio for the business or organizational aspects of a campaign, if you follow all other applicable rules);
[11] to communicate with stations in other countries, except stations in Canada (on General Radio Service).
[12] to transmit a false or deceptive communication.
{B} You must not use a CB station to transmit communications intended for live or delayed rebroadcast on radio or television. You may use your CB station to gather news items or to prepare programs.
4 and 5 cover the subject good.