Final answer:
When hauling explosives 1.1 and 1.3, you would use the Class 1.1 Explosives and Class 1.3 Explosives placards respectively.
Step-by-step explanation:
When hauling explosives 1.1 and 1.3, you would need to use placards with the appropriate hazard class. Explosives 1.1 are high explosives, while explosives 1.3 are low explosives.
The placard you would use for high explosives (1.1) is the Class 1.1 Explosives placard. This placard has a red background and features a white explosion symbol. For low explosives (1.3), you would use the Class 1.3 Explosives placard with a red background and a white burning symbol.