Asphalt Pump Track Section

Rolling asphalt pump-track lane 2m wide with a tidy concrete edge kerb on both sides, built from modules on the 2m grid: piece knob (flat straight 2x2m, single roller 2x4m, double roller 2x8m, 90-degree banked berm 6x6m, start hill 2x4m).

风格：low-poly, flat-shaded vertex colors, no textures, single shared material, so any set of these merges to one draw call; shares palette and scale with its kit