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CPRA Forensic Investigation · City of Lathrop Public Works

The Mossdale Speed Study Audit: City Recorded 57.3 MPH In School Zone While Claiming "Speeds Are 15 to 18 MPH"

Official records obtained through public records enforcement reveal pneumatic speed sensors were intentionally placed in a curved choke point under PG&E construction—and still recorded extreme, life-threatening speeds adjacent to Mossdale Elementary School.

Target Agency: City of Lathrop Public Works Department Date Range: Aug 31 – Sept 8, 2026 Investigation: Dismal Freedom Press Status: Publicly Verified
57.3 MPH
Autumn Rain Drive Top Speed
Recorded on Sept 3, 2026 at 7:59 PM. Statutory residential speed limit is 25 MPH.
129
Speeding Violators (>25 MPH)
Clocked exceeding the limit on Autumn Rain Drive despite sensors placed around a curve.
51.4 MPH
Crescent Moon Way Top Speed
192 vehicles clocked speeding through the neighborhood cut-through corridor.
60+ Days
Mossdale Remediation Delay
Delayed to late November past elections, while River Islands received 1–2 week priority.

Testimony on the Record vs. Raw Empirical Reality

Public Works Dais Narrative (Sept 14)
  • "Speeds are 15 to 18 MPH": Public Works Director Brad Taylor testified under oath that traffic speeds on Autumn Rain were naturally calmed by narrow roads.
  • Written Admission of Guessing: In a formal reply on Sept 16, 2026, Director Taylor admitted: "The average speeds that I stated during the Council Meeting were based on my recollection of actual data collected and were approximate."
  • Pretextual Postponement: Public Works unilaterally pushed the re-study out to November 16, 2026, blaming Halloween, Daylight Savings, Veterans Day, and rain.
Empirical Dataset Facts (Raw Data.xlsx)
  • Extreme Speeding Documented: Vehicles clocked at 57.3 MPH on Autumn Rain, 51.4 MPH on Crescent Moon, 41.6 MPH on Pheasant Downs, and 39.7 MPH on Mill Stone.
  • Sensor Placement at Choke Point: GPS coordinates (37.803159, -121.302985) prove tubes were placed directly at the Stone Cellar Way curve, omitting the main straightaway between McKee Blvd and Pheasant Downs.
  • Disparate Municipal Treatment: On the exact same dais, River Islands was promised rapid flashing beacons in 1 to 2 weeks and Band Lane promised speed humps in 2 to 3 weeks.

Empirical Breakdown of City Telemetry

Roadway / Location GPS Sensor Coordinates Total Volume Mean Speed 85th %ile Max Speed Violations (>25 mph)
Autumn Rain Drive
(Stone Cellar Way Placement)		 37.803159, -121.302985 3,453 14.2 mph 19.7 mph 57.3 MPH 129 vehicles (24 >30mph, 5 >35mph)
Crescent Moon Way 37.801423, -121.303779 1,328 17.8 mph 23.1 mph 51.4 MPH 192 vehicles
Pheasant Downs Road 37.802396, -121.303607 1,215 14.9 mph 19.9 mph 41.6 MPH 68 vehicles
Mill Stone Way 37.802350, -121.304494 1,042 15.6 mph 19.8 mph 39.7 MPH 44 vehicles

Primary Source Records & Public Downloads

City of Lathrop Speed Study Raw Telemetry

Microsoft Excel (.xlsx) · 606 KB · 4 Corridor Worksheets

Download XLSX

Autumn Rain Drive Speed Summary PDF

City Public Works Report · 746 KB · Certified Sensor Logs

Download PDF

Brad Taylor Formal Written Email Admission

EML / PDF · Conceding 15–18 mph claim was recollection

Download EML

Cal. Gov. Code § 835 Formal Legal Notice

Formal Sur-Reply & Directive for Interim Rubber Speed Humps

Download Notice
NEXT LATHROP CITY COUNCIL MEETING

Monday, October 12, 2026 · 7:00 PM

Attend In Person: Lathrop City Hall, 390 Towne Centre Drive, Lathrop, CA 95330
Participate via Zoom: Join live and speak during the 3-minute Public Comment period.
Demand: Immediate deployment of modular rubber speed tables on Autumn Rain Drive before a child gets injured.