What should you do if you do not get a hazardous materials endorsement on your commercials driver’s license but you are asked to deliver hazardous materials in a placarded vehicle?

Never drive a vehicle needing placards unless you have the hazardous materials endorsement. To do so is a crime. When stopped, you will be cited and you will not be allowed to drive your truck further. It will cost you time and money. [California Commercial Driver Handbook]