Traffic Signal Gantry

Cantilevered signal gantry spanning one 8m street module, a white capsule column on a dark grey base with a tapered arm reaching 4m over the carriageway carrying two flat signal heads and a small recessed sensor pod; single pastel-amber strip up the column.

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