A red track features a blue-and-white numbered "4" with isometric design.
A close up view of a red track can be seen with the number "4" visible between two vertical and parallel white lines. The "4" is painted on the track in two colors, blue and white. The blue portion of the painted number was placed on top of the original white paint to create an isometric projection. On the left of the view you can partially see another number painted in blue and white.