Special Provisions for Specific Classes: Class 1, Class 7 and Class 2
Class 1 explosives
Class 1 is divided into divisions 1.1 to 1.6 and compatibility groups A to S. The division gives the hazard, the compatibility group gives the loading rules. Traps: assuming all explosives can be loaded together, and forgetting that detonators and blasting agents need separation. The transport document must show the division and compatibility group.
Class 7 radioactive
Class 7 uses packages (excepted, industrial, Type A, Type B) with transport indices. The driver must observe dose-rate and transport-index limits, and separation distances. Traps: assuming a Type A package is safe for all contents, and ignoring the transport index.
Class 2 gases
Class 2 covers compressed, liquefied and dissolved gases, and refrigerated liquefied gases. Cylinders must be upright and secured, valves protected, and the vehicle ventilated. Traps: laying cylinders down, and ignoring the risk of cold burns from refrigerated gases.
Worked rule of thumb
For class 1, read division and compatibility group together; for class 7, read the transport index; for class 2, keep cylinders upright and secured.