Freight carried on Australian roads can be categorized into different types based on their characteristics and handling requirements. Some of the most common types of freight carried on Australian roads are:

1. General freight: This includes all types of goods that are transported in boxes, crates, pallets, or other containers. These goods can include consumer goods, industrial supplies, and other products that do not require any special handling.

2. Bulk freight: This includes goods that are transported in large quantities without any packaging. These goods can include liquids, gases, powders, grains, and other commodities that require specialized equipment for loading and unloading.

3. Refrigerated freight: This includes goods that require temperature-controlled transportation, such as perishable foods, pharmaceuticals, and other temperature-sensitive products.

4. Livestock: Livestock transportation involves the movement of live animals, such as cattle, sheep, pigs, and horses. This type of freight requires specialized equipment and handling procedures to ensure the safety and welfare of the animals.

5. Dangerous goods: Dangerous goods are materials that can pose a risk to health, safety, or the environment if not handled properly. Examples of dangerous goods include chemicals, explosives, and radioactive materials.

6. Oversized freight: This includes goods that are too large or heavy to be transported on standard trucks. This type of freight may require special permits and escorts for transport.

7. Containerized freight: This includes goods that are transported in shipping containers, which can be loaded onto trucks and transported to their destination. Containerized freight can include general or bulk goods, as well as refrigerated or dangerous goods.

These are some of the common types of freight carried on Australian roads, and each type may require different handling procedures and equipment to ensure the safe and efficient transport of goods.