Which types of cargo is not allowed to be taken on the bus with riders?

Buses must never carry: • Division 2.3 poison gas, liquid Class 6 poison, tear gas, or irritating material. • More than 100 pounds of solid Class 6 poisons. • Explosives in the space occupied by people, except small-arms ammunition. • Labeled radioactive materials in the space occupied by people. • More than 500 pounds total of allowed HazMat, and no more than 100 pounds of any 1 class. [California Commercial Driver Handbook]