homemade cookies and cream ice cream

Bake sale at the ice cream truck?
My dad is an ice cream truck. And I do pious homemade cookies, etc.. And I wondered what I have to do to be able to sell your truck? Im sure you need some kind of license to do so, Im not sure exactly which.Any information would helpful, thanks!
This is my 2 cents I urge them to contact the City Clerk and ask for information. Phone numbers right to do their work quickly, because you need a license, and the good health of the Department of Health. 3 places you have to go for your license state, their city license and the approval of the Department of Health. Correct me if I'm wrong. However, I did 19 years ago. Thanks