How Can I Change a AI Car Like a Ghost (No Trggers Lap Timer)

Hello everyone,
I use Unity Standard Game Objects to create Car vs AI car Racing Game, I did Lap timer and it’s triggers but I don’t want AI car triggers my timer tirgger objects.
Here is my Racing Game PRoject Video:

What can I change for AI car not to trigger lap timer hidden objects…
kind regards…

Found solution:
We may not want some objects to physically affect some objects. we can do this by using only layers without writing long code. We can use the layer matrix for the objects we want to interact with.

we get to this matrix like this: edit → project settings → physics