{"resourceId":"chicago-six-month-gunshot-detection-pilot-six-districts-evaluation-report-20261028","versions":[{"version":"external-10f49c08ab01594855a72640951f5a604751b47fa30305a2fd9b84146a3773d3","resource":{"id":"chicago-six-month-gunshot-detection-pilot-six-districts-evaluation-report-20261028","title":"Chicago plans a six-month gunshot-detection and violence-technology pilot in six South and West Side police districts with a final evaluation report, while police leaders say they know little about it","organization":"City of Chicago Department of Procurement Services / Chicago Police Department","sector":"Policing / gunshot detection technology evaluation","geography":"Chicago, Illinois, United States","publishedAt":"Block Club Chicago, Oct. 28, 2026","publicationDate":"2026-10-28","eventDate":"2026-10-28","sourceName":"Block Club Chicago","sourceLabel":"Gunshot Detection Pilot Planned For South And West Sides, But Details Are Sparse","sourceUrl":"https://blockclubchicago.org/2026/10/28/gunshot-detection-pilot-planned-for-south-and-west-sides-but-details-are-sparse/","evidenceClass":"independent-reporting","outcomeClass":"emerging","topics":["governance-procurement","operating-model"],"finding":"In an Oct. 20, 2026 letter, Chicago chief procurement officer Sharla Roberts told aldermen the city would launch pilots of \"violence interruption and public safety technologies, including gunshot detection systems\" in police districts 2, 5, 7, 9, 10 and 11, operational within about two weeks, saying procurement decisions should be informed by evidence. A city statement said the pilot will run six months, is separate from pending procurements, and that a final evaluation report and pilot data will be reviewed with user departments to decide next steps. At an Oct. 28 budget hearing, aldermen said there had been no CPD involvement, and acting Superintendent Fred Waller said he wished he knew more. The city ended ShotSpotter in September 2024, issued an RFP in early 2025 that drew nine bids, and has not awarded a contract; a council committee advanced an ordinance forcing an award within 30 days, and a non-binding ballot question goes to voters.","sledRelevance":"A large city is trying to put gunshot detection through a time-boxed, evaluated pilot before procurement, under political pressure to buy now, which tests how evidence-led police technology decisions hold up.","evidence":"Opened the Block Club Chicago article and read it in full; the procurement letter and city statement are quoted as reported; the pilot vendors, evaluation design and metrics were not disclosed and no city document was opened.","architectureImplications":"Unknown vendors and system design; any pilot would have to integrate alerts with CPD dispatch and investigative workflows, which aldermen say CPD has not been involved in.","governanceImplications":"Council pressure (30-day award ordinance, ballot question) competes with an executive-led evaluation; transparency over scope, vendors and metrics is the immediate gap.","securityPrivacyImplications":"Not addressed in the source; acoustic sensors in neighbourhoods raise data retention and audio-capture questions for any evaluation.","caveats":"Local news report of a letter and statement; pilot scope, vendors, costs and evaluation criteria undisclosed; no results yet; prior studies of ShotSpotter are referenced but not re-examined here.","streamIds":["public-safety"],"roles":{"sales":"Sales framing: Chicago is trying to test gunshot detection in a six-month pilot with a final evaluation report before buying, while the council pushes for an immediate award. The buyer problem is designing an evaluation that answers whether alerts lead to victims found, evidence recovered or faster response. A bounded engagement could define metrics and a data plan for such pilots. The evidence cannot support any performance claim; vendors, scope and metrics are not public and no results exist.","engineering":"Engineering framing: an honest pilot needs alert logs, dispatch timestamps, officer outcomes and evidence records joined for the same incidents, plus a comparison area. Pre-sales should ask whether the pilot vendor exports raw alert data, how alerts reach dispatch, and whether non-alert districts can serve as controls. A proof of value would build the data pipeline and dashboard for one district before launch. Do not assume integration with police systems; aldermen say CPD has not been involved.","delivery":"Delivery framing: the work is pre-registering the evaluation: metrics, comparison districts, data sources and a publication date for the final report, then running weekly data checks. The operational owner is the procurement office with CPD and the violence-prevention office as user departments. Acceptance criteria are proposals: published metrics before go-live, complete alert-to-outcome records, and an independent review of the final report. Main risk: a council-forced contract award arriving before the evaluation finishes."},"roleDetails":{"sales":{"customerProblem":"A city must decide whether to buy gunshot detection again and wants a pilot to inform the decision under heavy political pressure.","stakeholders":["Mayor’s office and procurement","Police department","Violence-prevention office and community partners","City council"],"discoveryQuestions":["What outcomes will the pilot measure?","Which districts serve as comparisons?","Will raw alert data be exported and published?"],"valueHypothesis":"A pre-registered, transparent evaluation can make the eventual procurement decision defensible either way.","potentialEngagement":"Evaluation design, metrics and data plan for the pilot.","unsupportedClaims":["Any gunshot detection performance outcome","That the pilot will be completed before an award"]},"engineering":{"fit":"Fits cities reconsidering acoustic gunshot detection.","architectureIntegration":"Alert feed linked to dispatch, incident and evidence records for joint analysis.","prerequisites":["Vendor raw data export","Dispatch and incident data access","Comparison districts"],"constraints":["Scope and vendors undisclosed","Six-month window","Police involvement unclear"],"security":"Acoustic sensor data retention and any audio capture need policy limits.","proofOfValue":["Data pipeline and dashboard for one district before launch."]},"delivery":{"work":"Pre-register metrics and comparison design; run weekly data checks; publish final report.","dependencies":["Vendor cooperation","CPD data access","Council timing"],"ownership":"Procurement office with CPD and the violence-prevention office","skillsAdoption":"Analysts able to link alert and outcome data; officers briefed on logging responses.","governanceCheckpoints":["Metrics published before go-live","Mid-pilot data review","Independent review of final report"],"acceptanceCriteria":["Metrics published","Complete alert-to-outcome records","Independent review completed"],"risks":["Council-forced award pre-empts evaluation","Missing police data","Selection of favourable districts"]}},"retrievedAt":"2026-10-30T02:58:32Z","enrichedAt":"2026-10-30T03:06:22Z","enrichmentBasis":"retrieved source","accessibilityWorkforceImplications":"Concentrated in South and West Side districts; community groups were cited as partners for violence-interruption elements.","procurementImplications":"Pilot is kept separate from the pending RFP with nine bids; results are meant to inform any award, but a council-forced award could pre-empt the evaluation.","operatingModelImplications":"Evaluation run by procurement with user departments; the police department’s role and the outcome metrics are unclear.","sourceVerification":{"openedUrl":"https://blockclubchicago.org/2026/10/28/gunshot-detection-pilot-planned-for-south-and-west-sides-but-details-are-sparse/","referenceExcerpt":"In Roberts’ letter, which is dated Oct. 20, she said she anticipated the pilots to be “operational within the next two weeks.”","promptVersion":"sled-research-v4.0","model":null,"basis":"agent-reported inspection"}}}]}