These poles decorate most of the lines in Belgium. On multiple track lines, the hectometre poles are placed alternatively on the left and right (provided that the 'zero point' is the same for both tracks). Odd values, when ascending, are on the left. The high kilometre poles are placed on both sides in that case.
In this pack of assets, the (blue) panels that show kilometre values are menu-driven (? in Surveyor). For the kilometre value to appear on the Trainz Minimap, the Name field should be filled in as well.