Full disclosure: I am a college student majoring in Accounting, and not a "tax expert". However, I will try to help you out with the knowledge I have available to me.
The question I have for you is this: Are you driving from your home to your rental properties? Because if the answer to that question is "yes", then that is not considered business transportation. That is considered commuting. My textbook says this in Chapter 6, page 18, paragraph 4:
According to your post, it seems like you are driving from your house to your rental property. In that case, it would be considered commuting and not as business transportation.