Washington D.C. — what changed https://1001smartcities.org/cities/washington-d-c/ Changes to the documented record of Washington D.C., United States: entries entering the record, corrections, reclassifications and withdrawals across the city's projects. Every item resolves to an immutable snapshot; old versions keep their URL. en Thu, 27 Aug 2026 13:37:00 GMT 1001 Smart Cities static content generator District Smart Lighting P3 Modernization — Publication date recorded for 5 sources https://1001smartcities.org/versions/project/washington-dc-smart-lighting/2026-08-27-source-dating/ project:washington-dc-smart-lighting:2026-08-27-source-dating Thu, 27 Aug 2026 13:37:00 GMT dates-recorded Every source on this entry now carries a date key: a publication date where the publisher states one, otherwise an explicit null with the reason on the record. Building Energy Performance Standards and the benchmarking behind them — Publication date recorded for 10 sources https://1001smartcities.org/versions/project/washington-dc-beps/2026-08-27-correction-run/ project:washington-dc-beps:2026-08-27-correction-run Thu, 27 Aug 2026 13:05:00 GMT dates-recorded Dated every source: the two D.C. laws from their own effective dates, the DOEE release from its dateline, and four standing operator pages as explicit nulls. Building Energy Performance Standards and the benchmarking behind them — Entered the record https://1001smartcities.org/versions/project/washington-dc-beps/2026-08-27-claims-and-sources/ project:washington-dc-beps:2026-08-27-claims-and-sources Thu, 27 Aug 2026 03:13:38 GMT recorded Created the first structured Evidence Passport with 8 claims and 10 source dossiers. District Smart Lighting P3 Modernization — Entered the record https://1001smartcities.org/versions/project/washington-dc-smart-lighting/2026-08-26-p1-quality-uplift/ project:washington-dc-smart-lighting:2026-08-26-p1-quality-uplift Wed, 26 Aug 2026 14:11:55 GMT recorded Created the first structured Evidence Passport with 6 claims and 5 source dossiers. Washington Metro's automatic train operation, switched off for 15 years — Publication date recorded for 9 sources https://1001smartcities.org/versions/project/washington-dc-metro-automatic-train-operation/2026-08-21-source-dates/ project:washington-dc-metro-automatic-train-operation:2026-08-21-source-dates Sat, 22 Aug 2026 02:44:00 GMT dates-recorded Record the publication date of each source that states one; a source that publishes no date is marked null, and one that shows only a revision carries `updated` instead. DC Water's Clean Rivers Tunnels & the Consent Decree Behind Them — Publication date recorded for 12 sources https://1001smartcities.org/versions/project/washington-dc-clean-rivers-tunnels/2026-08-21-source-dates/ project:washington-dc-clean-rivers-tunnels:2026-08-21-source-dates Sat, 22 Aug 2026 02:43:00 GMT dates-recorded Record the publication date of each source that states one; a source that publishes no date is marked null, and one that shows only a revision carries `updated` instead. DC 311 and the Open311 API It Started — Publication date recorded for 13 sources https://1001smartcities.org/versions/project/washington-dc-311/2026-08-21-source-dates/ project:washington-dc-311:2026-08-21-source-dates Sat, 22 Aug 2026 02:42:00 GMT dates-recorded Record the publication date of each source that states one; a source that publishes no date is marked null, and one that shows only a revision carries `updated` instead. DC Water's Clean Rivers Tunnels & the Consent Decree Behind Them — Entered the record https://1001smartcities.org/versions/project/washington-dc-clean-rivers-tunnels/2026-08-20-claim-baseline/ project:washington-dc-clean-rivers-tunnels:2026-08-20-claim-baseline Fri, 21 Aug 2026 13:45:00 GMT recorded Created the first structured Evidence Passport with 12 claims and 12 source dossiers. Washington Metro's automatic train operation, switched off for 15 years — Entered the record https://1001smartcities.org/versions/project/washington-dc-metro-automatic-train-operation/2026-08-20-claim-baseline/ project:washington-dc-metro-automatic-train-operation:2026-08-20-claim-baseline Fri, 21 Aug 2026 10:35:00 GMT recorded Created the first structured Evidence Passport with 8 claims and 9 source dossiers. DC 311 and the Open311 API It Started — Entered the record https://1001smartcities.org/versions/project/washington-dc-311/2026-08-20-claim-baseline/ project:washington-dc-311:2026-08-20-claim-baseline Fri, 21 Aug 2026 10:05:00 GMT recorded Created the first structured Evidence Passport with 10 claims and 13 source dossiers. Automated Traffic Enforcement Cameras and the Collection Gap — Entered the record https://1001smartcities.org/versions/project/washington-dc-automated-traffic-enforcement/2026-08-20-source-dates/ project:washington-dc-automated-traffic-enforcement:2026-08-20-source-dates Thu, 20 Aug 2026 00:00:00 GMT recorded Created the first structured Evidence Passport with 1 claim and 9 source dossiers.