How to get turn direction of a NavMeshAgent?

Hello,

Is it possible to get the turning direction as a NavMeshAgent approaches a waypoint? I was trying to think of ways I could have a car-indicator system. I thought I could use the gameobject's rotation value but it was a bit unrealiable since I have objects spawning with different rotation orientation.

Thanks

 

We call them indicators but they're basically turn signals; the yellow blipping lights on a car that let's other drivers know that you're turning into another street/changing lanes. I wanted to know how I can recreate this, ideally before the car turns around the corner.