UPPER LAKE
Roadside inspection site in California • 55 inspections on record
UPPER LAKE is a roadside inspection site in California where state law-enforcement officers conduct commercial-vehicle inspections under the federal Motor Carrier Safety Assistance Program (MCSAP). Most inspections at this site are Level V — Vehicle Only. Last recorded inspection: Mar 20, 2026. Use this page to see how often the site is active, what violations inspectors most often cite, which carriers come through, and how the out-of-service rate compares to the state average.
Possibly dormant or seasonal
No FMCSA inspections have been recorded at UPPER LAKE in the last 90 days. The site may be seasonal, temporarily closed, or unstaffed. Check with the state DOT or commercial-vehicle enforcement office before relying on current activity levels.
- Name:
- UPPER LAKE
- State:
- California (CA)
- Total Inspections:
- 55
- OOS Rate:
- 14.5%
- Active Since:
- Nov 3, 2023
- Latest Inspection:
- Mar 20, 2026
Ranks 1239th by inspection volume in California.
About This Inspection Site
UPPER LAKE is a roadside inspection location in California where FMCSA-certified inspectors conduct safety inspections of commercial motor vehicles under the Motor Carrier Safety Assistance Program (MCSAP). This site has conducted 55 recorded inspections from Nov 3, 2023 to Mar 20, 2026 .
A total of 5 unique carriers have been inspected at this site. The average number of violations per inspection is 0.7. The out-of-service rate is 14.5%, meaning a moderate number of inspected vehicles or drivers are placed out of service for safety deficiencies.
Inspections follow CVSA (Commercial Vehicle Safety Alliance) North American Standard procedures and may include weight checks, credential verification, mechanical inspection, hours-of-service compliance review, and hazardous materials documentation checks. Vehicles or drivers that fail critical safety criteria are placed out of service until deficiencies are corrected.
The most frequently cited violation at this site is State/Local Laws - Violation of state and local law - Equipment violation. (Must have corresponding state statute or regulation) (Unsafe Driving) with 6 citations , followed by State/Local Laws - Excessive dimension (width/height/length). (3 citations) . A total of 26 distinct violation codes have been cited at this location.
Reported inspection-feed labels
Raw FMCSA reported-location label that have been recorded against this canonical inspection site. Each link opens the audit/evidence cluster page for that label — every inspection FMCSA filed under that exact reported text, in the California inspection feed. For the deep canonical-station view, you're already here.
Inspection Level Breakdown
55 inspections by CVSA level
Monthly Inspection Volume
Inspections per month, last 9 months.
Peer Stations in California
Stations of similar inspection volume — useful for comparing OOS rates and operating patterns.
How to use station-level data
- Note the station's typical activity hours. Use the monthly inspection volume chart on this page to see when UPPER LAKE has historically been most active. FMCSA does not publish official hours, so the inspection record is the closest proxy.
- Check what level of inspection typically happens here. The Inspection Level Breakdown shows what mix of CVSA Level I, II, III, IV, V, and VI inspections this site runs. Expect the level-mix at the next visit to look similar.
- Review the most-cited violation codes. Codes that show up most often in the violations summary tell you what inspectors at this station focus on — often brake-system, lighting, tire, or hours-of-service items.
- Pre-trip your truck against those specific codes. Walk-around the tractor and trailer and physically verify each item the top codes describe. A 5-minute pre-trip aligned to this station's hot codes is far more efficient than a generic checklist.
- Track your own inspection history at /usdot/{your-USDOT}/inspections/. After every inspection, confirm the report shows up on your USDOT profile within 30 days. Disputes (DataQs) must be filed against your own record, not the station's.
Frequently asked questions about UPPER LAKE
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Recent Inspections
Latest 10 of 55 inspections at this site. View full inspection log →
Full record tables
Paginated carrier, inspection, and violation-code logs for this station.
About FMCSA inspection stations
FMCSA inspection stations — sometimes called weigh stations, scales, or ports of entry — are the physical points where state law-enforcement officers stop commercial motor vehicles to conduct safety inspections, weight checks, and credential verification. The federal Motor Carrier Safety Assistance Program (MCSAP) funds the inspector workforce; the Commercial Vehicle Safety Alliance (CVSA) defines the inspection-level standards (Levels I through VI). Every report becomes part of FMCSA's national inspection file, which is what TruckCodex mirrors here.
A station's "OOS rate" — out-of-service rate — measures the share of inspections that ended with the vehicle, driver, or both placed out of service. A high OOS rate doesn't necessarily mean the inspectors are stricter; more often it reflects the population of carriers passing through the corridor. A low OOS rate often means the station is on a route used by larger, well-maintained fleets running regular pre-trip programs.
TruckCodex is not affiliated with the FMCSA, MCSAP, CVSA, or any state DOT. Every station record on this site is sourced from the public FMCSA inspection file and refreshed daily. We do not publish staffed hours, schedule changes, or upcoming enforcement details — those would not be public to begin with. For the live status of any specific station, contact the operating state's commercial-vehicle enforcement bureau.
Related
Data sources & freshness
TruckCodex aggregates official public-sector datasets. See the Source registry for dataset-level coverage and the Freshness log for last-import timestamps.
Census, SAFER, SMS, Licensing & Insurance (L&I), roadside inspections, crashes, and authority history.
Vehicle recall campaigns, defect investigations, and consumer safety complaints (SCRS).
Cross-border carrier registry and Canadian recall campaigns where applicable.
TruckCodex is an independent aggregator; it is not affiliated with FMCSA, NHTSA, EIA, or Transport Canada. Always verify compliance-critical information directly with the originating agency.