Nope, that's just part 15 which really just applies to unlicensed radiators that aren't covered under any other service. The old "Class D Citizens Band" is licensed under Part 95 subpart D.
Take a look at section 95.410, and 95.411. If you need more information, take a look at Part 95 subart E regarding the power rules.
The friendly people at the FCC say four watts carrier power on AM, or 12 watts PeP on SSB. This means multi-kilowatt linears are not legal. This means using modified 10M ham radio equipment on the CB band is not legal (also due to the type acceptance requirements). Oh yes, "freebanders" transmitting on the broadcast auxiliary frequencies and in the amateur radio band with modified high power CBs are also illegal.
Now, there was a time many years ago when the FCC was actually operated by engineers, and they had people who would come to your home or your vehicle and take your radio equipment away and leave you with a very large fine for illegal operation. However, we now live in an era when the FCC is run by lawyers who are more interested in using radio services as a profit center and they don't actually have many people who have the skills required for enforcement. But this does NOT mean it is legal.
--scott