建材路观察：一场关于停车泊位的街道调查

Field notes

The page turns a single road-design dispute into a document checklist, asking for approval files, lane diagrams, parking-demand surveys, traffic-flow data, safety reviews, and public-notice records. Its material archive currently contains zero items, while the resident-reported responses remain explicitly provisional and lack complete recordings, work orders, or dates. The named parties include Changping Traffic Detachment, the district transport authority, and Dongxiaokou Town Government, whose respective responsibilities are still requested rather than demonstrated.