Carrier profile · USDOT 229047 · MC-197435 · Updated Jun 15, 2026

Williams Tank Lines LLC

DBA WILLIAMS TANK LINES

161 power unitsavg 8.1 yrRegional · 5 statesSTOCKTON, CA88/100
CARRIER ACTIVEMC-197435 ACTIVERATED SATISFACTORYHAZMAT
Verified linkswilliamstankline.comFMCSA SAFER

Safety

Roadside out-of-service rates versus the national benchmark, inspection and crash trends, decoded violation themes, and ELD / hours-of-service integrity — the full safety picture behind the verdict.

Out-of-service rate· 24-mo cumulative · vs national

Vehicle OOS 6.3%24-mo cumulative
050%nat'l 22.26%
Driver OOS 0.3%24-mo cumulative
030%nat'l 6.67%

Every inspection in the window pooled — 680 vehicle and 612 driver inspections over 24 months.

Vehicle OOS rate· vehicle OOS · vehicle-level inspections · 6-month trailing

4.0% · latest 6-mo window▼ Falling

Share of vehicle-level roadside inspections in each trailing six-month window that resulted in a vehicle out-of-service order. Trending down 2.6 pts across the window. The national vehicle benchmark uses the same metric and is shown on the chart.

Roadside inspection history· 24 charted calendar months · vehicle / driver level · any-OOS overlay

692 inspections in the charted months · busiest month Jun '25 · 55

Vehicle-levelDriver-levelAny OOS

Monthly FMCSA roadside inspections across the 24 charted calendar months. Bars show level-qualified vehicle and driver populations; one inspection can qualify for both. The line shows inspections with any out-of-service result.

Inspection coverage· expected vs observed · the fraud signal

Inspection coverage

How heavily FMCSA inspects this fleet for its size — it tells you how much to trust the safety signals above. Thin coverage on a young authority is a fraud signal nobody else surfaces.

Heavily inspected
Under-inspected
Expected
Well-monitored
Heavily inspected
≈2.2 / unit·yr
thin signalabundant signal
Among the more heavily-inspected carriers for its size — abundant roadside signal. Coverage isn't the question here; the out-of-service and crash record is.
Registered power units
161
Inspections · 24 mo
712
Annualized
≈356 / yr
Coverage
≈2.2 inspections / unit · yr

BASIC categories· CSA SMS · Aug 2026

3%
Unsafe Driving
Vektor peer est.
9%
Hours-of-Service
Vektor peer est.
12%
Driver Fitness
Vektor peer est.
Controlled Substances
0violations
clean · per-BASIC
17%
Vehicle Maintenance
Vektor peer est.

Percentile = standing among same-exposure peers (higher = worse). FMCSA publishes percentiles for only some carriers (shown official); elsewhere we show a Vektor peer-percentile estimate, or the absolute SMS measure when there are too few inspections to rank.

Violation themes· decoded · grouped by BASIC

What this carrier actually gets cited for — FMCSA violation codes decoded into plain English, ranked by frequency.

  • 392.2 State/local traffic law violation (speeding, etc.)Unsafe Driving100 · 0 OOS
  • 393.45 Brake tubing / hose defectsVehicle Maintenance86 · 41 OOS
  • 396.3 Inspection / repair / maintenance not performedVehicle Maintenance77 · 24 OOS
  • 393.47 Brake actuators / linings / componentsVehicle Maintenance68 · 2 OOS
  • 393.9 Inoperative required lampsVehicle Maintenance54 · 10 OOS
  • 393.53 Automatic brake adjusters / indicatorsVehicle Maintenance47 · 0 OOS
  • 393.55 Antilock brake system (ABS)Vehicle Maintenance34 · 0 OOS
  • 396.5 Oil and/or grease leakVehicle Maintenance24 · 5 OOS
  • 393.70 Coupling devices / fifth wheelVehicle Maintenance16 · 4 OOS
  • 393.11 Required lamps/reflectors missingVehicle Maintenance14 · 0 OOS

ELD & hours-of-service

16 hours-of-service / ELD violations on record · most recent Feb 25, 2026. FMCSA does not publish the ELD device brand; these are the carrier's logging-compliance signals.

6ELD device issues
4No log / no ELD
0False logs
2Drove over hours

Trending worse — 50% of ELD violations are in the last 24 months.

Crash history· 288 total · 17 in 24 mo

288
Total crashes
17
In last 24 mo
14
Fatal
100
Injury
YearCrashesFatalInjuryTow
20264024
20256026
2024110511
20235025
20229029
2021191818
2020131411
2019130313
2018101110
2017143314
20169039
2015161816
2014150415
2013132413
2012111311
20117137
2010111211
20096036
2008120312
2007110611
2006110511
2005110411
20046036
20036046
20025025
20015015
20008118
19993003
19984134
19971001
19962002
19952011
19943032
19931011
19915011
DateStateFatalitiesInjuriesTow-away
May 8, 2026CA04Yes
Apr 25, 2026CA00Yes
Apr 14, 2026CA01Yes
Jan 25, 2026CA00Yes
Sep 26, 2025CA00Yes
Apr 7, 2025CA00Yes
Mar 23, 2025CA01Yes
Mar 17, 2025CA01Yes
Feb 21, 2025CA00Yes
Jan 28, 2025CA00Yes
Dec 30, 2024CA01Yes
Nov 18, 2024NV00Yes
Nov 10, 2024CA01Yes
Nov 9, 2024CA01Yes
Nov 9, 2024CA01Yes
Sep 20, 2024CA00Yes
Sep 4, 2024CA00Yes
Jun 24, 2024CA00Yes
Mar 14, 2024CA00Yes
Jan 13, 2024CA01Yes
Jan 10, 2024CA00Yes
Dec 30, 2023NV01Yes
Oct 20, 2023NV00Yes
Aug 2, 2023CA01Yes
Feb 8, 2023AZ00Yes