QUESTION Pitlane not enabling pit limiter

So it's my first track mod, I have made a piece of track named 1PITS, and I defined the surface as follows:
[SURFACE_3]
KEY=PITS
FRICTION=0.99
DAMPING=0
WAV=
WAV_PITCH=0
FF_EFFECT=NULL
DIRT_ADDITIVE=0
IS_VALID_TRACK=1
BLACK_FLAG_TIME=0
SIN_HEIGHT=0
SIN_LENGTH=0
IS_PITLANE=1
VIBRATION_GAIN=0
VIBRATION_LENGTH=0

in data/surfaces.ini
Yet when I go to test the track, there is no pit limiter. Why is this? I thought I just needed to define the IS_PITLANE=1 for it to work. It's not an issue with the surfaces.ini, because my grass works perfectly fine.

 

Is that mesh in pits visual or is it hidden physical mesh with another visual mesh above it?

 

It’s both a physical and visual mesh. I did not realize those have to be separated.

 

That’s not an issue, but… do you have any other meshes also named PIT?

 

they don't need to be separated, but sometimes, if visual mesh is named wrongly, it can be detected as a physical mesh and since visual is usually above physical, AC will think you are on another surface that you would like to be. But if the mesh is both visual and physical, I suggest to check AC log.txt file from Documents/Assetto Corsa/logs and there will be section where AC guesses the surfaces from the object names and you can find some hints there what went wrong.