White lines are Decal_White_Line_F.p3d in "A3/Roads_F/Decals" , The texture for the line is in the file Decals_Runway_Ca(nohq).paa in "A3/Roads_F/Runway/Data/" (The white line on left of image).
The parking lot road and taxi ways at the airport appear to me to be the same, maybe a multi-texture of these files (maybe) asphalt_dt.paa with concrete_smooth_512_dtsmdi.paa and/or concrete1_512_dtsmdi.paa on top. Found in "A3\Data_F\detailmaps\"