Have all permits in order
Ensure you have appropriate permits and/or permission for travelling in certain national parks, indigenous managed areas and pastoral properties. Generally, you don’t need a permit to travel on a public road through pastoral land. Leave gates as you find them and take care not to stress stock.
And if you see official signs or warnings, they exist for a reason. Obey them.
Fishing may be acceptable. Ensure you have permits, obey regulations and fish responsibly by not taking take any more than you need. And clean up afterwards.
Stick to the driving tracks...
Stick to tracks designated for travelling. Leaving tracks can cause compaction and wheel ruts and damage vegetation. Wheel ruts may not repair, and in some ecosystems such as coastal saltmarsh they can alter tidal patterns and damage larger areas. Birds, such as the endangered hooded plover which nests on sandy beaches, are especially vulnerable.
So stay on tracks marked on your map and know where they go. Other tracks may be for park management or fire vehicles, and should be avoided. They probably won’t lead anywhere interesting anyway.
...your vehicle can spread weeds and diseases
Going off-track can spread weeds and disease and damage habitat. To avoid spreading weeds, wash your car and camping gear before the trip and put it through a carwash as you travel. If you find any seed attached to you or your vehicle, either burn it in a hot fire or put it in a bag to be disposed of responsibly. Native plants can also become weeds when established beyond their natural distribution.
Some areas are quarantined due to weeds or damaging pathogens (such as Phytophthora cinnamomi or root rot fungus), so follow directions in these areas. In areas with Phytophthora cinnamomi, walking may be allowed. If so, clean your boots before and afterwards (detergent is best but even brushing off soil will help) and avoid walking in wet areas as the spores are water-borne.
Be aware that picking wildflowers or taking native flora is illegal.
Pick your travel times (and avoid wildlife on the roads)
Help to preserve native fauna by not driving at dawn, dusk and overnight, as there’s a great chance of wildlife being on the roads. If you can’t avoid travelling at these times, slow right down and keep an eye on the roadside vegetation. Kangaroos are social animals; if you see one, there will probably be more nearby and their reactions are unpredictable.
But encounters when you’re not on the road are very rewarding, so in your planning allow time to pull over and observe wildlife. Get out and walk, sit and listen. Bring binoculars. The most memorable experiences are often unplanned – seeing an echidna train, for example.
At all times, try not to disturb wildlife. They have their own natural food, so feeding them is not appropriate.