Road arrows

[Unkovic]

Is there any object like this? Can be custom. 

[Tut]

This can be done with texture shaders quite easily, or modeling the paint using geometry that resembles the curvature of the road itself and texturing with alpha cutout.
I think that a lot of mapping will go into it regardless of which approach you pick.

@Unkovic

[Unkovic]

Any tutorial? 

[Tut]

There are loads on the net. Try installing Blender 3D and try and get started there. 

You can also view the modeling section https://forum.multitheftauto.com/forum/177-modelling/ or try asking on #modelling on MTA discord. We have a lot of geeks in there available to give advice in the field.