I don't think there is any rules regarding roadkill?
I think if you skittled a deer with the front of your car.... you could probably stuff it in the trunk, take it home and eat it
Might be a bit suspicious if it is a ripper 10 pointer with a nice neck shot & you got your cammo gear and rifle on the back seat
I know alot of people here 'dress up' roadkill.... not uncommon to find a deceased Roo leaning on an armco railing (barrier next to the road) wearing a footy jumper, a baseball cap on its head, scarf around its neck, sunglasses, cigarette hanging out of its mouth & a beer can in its hand (paw)
Quite funny to see actually (not for the roo) Often you will go past the same roo a few days later & it has a different footy team jumper or scarf on (Aussies are very competative)
I know alot of farm folk stop and butcher roos killed the night before.... get the back legs and tail.... boil them up for dog food.
Wombats are the worst things to hit..... as you drive over them at any decent speed they roll and throw your car up in the air, dukes of hazzard style..... they are fat & round and don't splat at all.... they will get a car doing 55-60mph 2' off the ground
To hunt deer, pigs & ducks etc, you need to do a course (to be able to identify your target) as, for example, ducks of some varieties are not to be hunted, others are ok.... so, lots of rules and regulations, seasons etc
I think there is only seasons for ducks and deer, other than that most animals are ferrel, so its open season all year.... to hunt in Oz there are.... Camels, hogs, roos, foxes, rabbits & hares, ferrel cats & dogs, goats. There are also wild horses (Brumbies) and buffalo of some description, but I think these are culled by pro hunters as required by local councils..... I know also, the Arabs buy live camels so there is alot of camels being rounded up and shipped over there