How to claim travel expenses?

[nesta]

Hello guys

I have a general question about travel expenses to be claimed against my assessable income.

Firstly, for my full-time job, I have to travel by own car from home to work like others every weekdays.

Some other weekdays, I worked at night right after day work as a contractor. Potentially, my total trip from day job to second job, even back home, all car expenses could be treated as business travel expenses and fully deductible.

What happen if I own an IP and required to check out the property, say owner-inspection to be done after work hours. Is that considered as business trip as well? Like from day job to 2nd activity which is carrying business/investment.

But I wonder, how ATO will look into such trips which I can't find the clear answer from ATO.

Can anyone help me out?

Thanks

Nesta