| Field | Before | After |
|---|---|---|
| Field Trial Status | Before in_development | After on_going |
| Field Trial End Date | Before November 07, 2026 | After November 30, 2026 |
| Field Last Published | Before January 12, 2026 08:18 AM | After September 16, 2026 08:56 AM |
| Field Intervention Completion Date | Before | After August 22, 2026 |
| Field Data Collection Complete | Before | After No |
| Field Intervention (Public) | Before Door Hanger (DH): In selected weekly bundles of street segments, segments are randomized to (i) Full-DH (all addresses on segment receive a door hanger), (ii) Partial-DH (exactly half of addresses on segment receive a door hanger), or (iii) Control-DH (no addresses receive door hangers). Door hangers provide instructions and a QR/URL for using San Diego’s Get-It-Done (GID) system. Door-to-Door Survey (D2DS): Starting in week 2, a subset of bundles are selected for an in-person survey of adult residents to measure service beliefs, GID awareness/usage, and pothole-related perceptions. Four of six weekly D2DS bundles are drawn from the prior week’s DH bundles and two are drawn from bundles without DH but with recent pothole reports. Pothole Fix (PF): Not randomized. We construct PF(x) indicators for whether pothole reports are fixed within x∈{1,…,7} days. For identification, we exploit standardized pothole crew allocation mechanisms by the Transportation Department. | After Door Hanger (DH): In selected weekly bundles of street segments, segments are randomized to (i) Full-DH (all addresses on segment receive a door hanger), (ii) Partial-DH (exactly half of addresses on segment receive a door hanger), or (iii) Control-DH (no addresses receive door hangers). Door hangers provide instructions and a QR/URL for using San Diego’s Get-It-Done (GID) system. Door-to-Door Survey (D2DS): Starting in week 2, a subset of bundles are selected for an in-person survey of adult residents to measure service beliefs, GID awareness/usage, and pothole-related perceptions. Four of six weekly D2DS bundles are drawn from the prior week’s DH bundles and two are drawn from bundles without DH but with recent pothole reports. Pothole Fix (PF): Not randomized. We construct PF(x) indicators for whether pothole reports are fixed within x∈{1,…,7} days. For identification, we exploit standardized pothole crew allocation mechanisms by the Transportation Department. Reporting Incentive (RI), added after initial registration (proposed to the City January 14, 2026, approved January 23, 2026; in the survey instrument from February 21, 2026): at the end of the D2DS interview each respondent receives a business card with a QR code to a study landing page and a printed reward amount pre-assigned to the address: with probability 1/2 no amount ($0 placebo), with probability 1/2 an amount of $5, $10, $15 or $20 (1/8 each). The reward is paid if the respondent submits a pothole report through GID within 60 days and the City closes the case within 60 days. |
| Field Intervention End Date | Before August 08, 2026 | After August 22, 2026 |
| Field Sample size (or number of clusters) by treatment arms | Before Door-hanger randomization (street segments): 50% Control-DH, 25% Partial-DH, 25% Full-DH (shares of sampled segments). | After Door-hanger randomization (street segments): 50% Control-DH, 25% Partial-DH, 25% Full-DH (shares of sampled segments). Reporting-incentive randomization (D2DS respondents, from February 21, 2026): 50% $0 placebo, 12.5% each $5, $10, $15, $20. |
| Field Public analysis plan | Before No | After Yes |
| Field | Before | After |
|---|---|---|
| Field Document | Before |
After
sd_potholes_pap.pdf
MD5:
73ccc4980e8287729f62198156da9a8a
SHA1:
bb76c8fc4a0612885a3a0a0112694109407c107b
|
| Field Title | Before | After Pre-analysis plan, version of May 15, 2026 |
| Field | Before | After |
|---|---|---|
| Field Document | Before | After |
| Field Title | Before | After Pre-analysis plan, version of September 16, 2026 (updates the May 15, 2026 version; documents the realized field design and deviations) |