HaulerCheck · https://haulercheck.com/carrier/229047-williams-tank-lines-llc/ · Checked 2026-10-20 14:45 UTC · Census and inspections Oct 20, 2026 · Authority and insurance: FMCSA Motus · Oct 20, 2026
Williams Tank Lines LLC
Doing business as Williams Tank Lines
Carrier & Broker
Motor carrier & Broker under MC197435
No risk signals found
How risk signals workNothing in the FMCSA record matched our risk signals. That is not a guarantee, and it does not confirm who you are talking to; follow the checks below.
No cargo cover filed with FMCSA
Green means the FMCSA record shows it. It does not confirm who you are talking to, or that a policy covers your specific load.
What to verify next
- Confirm authority and insurance on the official Motus record. Safety record: SAFER.
- Call back on the number on file, (209) 944-5613, not a number from an email or load board.
- Check that the MC number you were given is MC197435.
- Ask for a certificate of insurance naming you as holder, with cargo coverage that fits your load; if it brokers your load, ask for proof of its BMC-84/85 bond or trust instead.
Insurance on file
Liability (BI&PD) pays for injury and damage to other people and property; it does not cover the freight. Cargo insurance covers the freight. FMCSA only requires cargo filings from household goods carriers and freight forwarders, so most carriers file none: ask for a cargo certificate that fits your load. No cargo cover filed with FMCSA.
| Type | Docket | Layer | Insurer | Coverage | Effective | Status |
|---|---|---|---|---|---|---|
| Liability (BI&PD) | MC197435 | Primary | National Union Fire Insurance Company of Pittsburgh, Pa. Policy 6401490 · BMC-91X | $750,000 | Apr 1, 2026 | Active |
| Trust Fund | MC197435 | — | Pacific Financial Association, Inc Policy NONE · BMC-85 | $75,000 | Oct 24, 2013 | Active |
Insurance that ended since 2024 · 2 policies
| Ended | Type | Insurer | Effective | How it ended |
|---|---|---|---|---|
| May 3, 2026 | Liability (BI&PD) MC197435 | National Interstate Insurance Company Policy WTL 8199910-07 | Apr 1, 2023 | Cancelled at term end |
| Apr 1, 2026 | Liability (BI&PD) MC197435 | National Interstate Insurance Company Policy WTL 8199910-07 | Apr 1, 2023 | Replaced |
"Replaced" means a new filing took over the day the old one ended. "Cancelled" means the insurer or the company ended the policy; if no replacement was filed in time, the company was uninsured with FMCSA in between.
Source: FMCSA Motus · Oct 20, 2026. Identical filings repeated in the FMCSA data are shown once; a filing listed under two dockets is one policy, not extra coverage. Coverage is the maximum amount filed with FMCSA, not the full policy.
Confirm current filings: Motus record and ask the insurer for a certificate naming you as holder.
Roadside inspections Oct 20, 2024 – Oct 20, 2026
48 of 687 · California avg 19.8%
1 of 613 · California avg 6.3%
By quarter inspections and vehicle out-of-service rate
Bar height: inspections in the quarter. Percentage: vehicles put out of service, of vehicle inspections. The first and last quarters are partial.
Where it was inspected 5 states and provinces, 24 months
- CA 682 94.6%
- NV 32 4.4%
- US 4 0.6%
- UT 2 0.3%
- AZ 1 0.1%
Vehicles seen at inspections different VINs, 24 months
Power units: 197
83 straight trucks · 80 tractors · 18 semi-trailers · 16 full trailers
Peterbilt 85Kenworth 61Volvo 13Freightliner 8Heil 6Polar 4
336 power units declared on the MCS-150. Inspections see only part of a fleet, so fewer here is normal; many more can mean the registration is out of date.
Trailers: 171
86 full trailers · 80 semi-trailers · 3 pole trailer · 1 other unit · 1 tractor
Heil 31Polar 25Brenner 3Kenworth 1
Includes trailers the company pulled but does not own, such as shipper or leasing trailers.
Shippers named on inspection reports 24 months
Chevron 67Kinder Morgan 55Tso Logistics 32BP Products 23Tso LGSTCS Operations LLC 13Marathon Petroleum 10
As written by roadside inspectors, who note the shipper on the bill of lading. Only names that appear on at least three different carriers' reports are shown, so private individuals are never listed. A shipper on a report is not a reference.
10 most recent inspections
| Date | State | Level | Violations | Out of service |
|---|---|---|---|---|
| Oct 16, 2026 | CA | 5 | 1 | No |
| Oct 16, 2026 | CA | 5 | 1 | No |
| Oct 16, 2026 | CA | 5 | 0 | No |
| Oct 16, 2026 | CA | 5 | 0 | No |
| Oct 16, 2026 | CA | 5 | 0 | No |
| Oct 16, 2026 | US | 1 | 0 | No |
| Oct 16, 2026 | CA | 5 | 0 | No |
| Oct 16, 2026 | CA | 5 | 0 | No |
| Oct 16, 2026 | CA | 5 | 0 | No |
| Oct 15, 2026 | CA | 1 | 0 | No |
How these rates are calculated
Period: Oct 20, 2024 – Oct 20, 2026. Vehicle rate = vehicle inspections with a vehicle out-of-service order ÷ vehicle inspections (levels 1, 2, 5 and 6). Driver rate uses levels 1, 2, 3 and 6. The California average covers 398,391 vehicle and 509,953 driver inspections of all California-based carriers in this period. It mixes every type of operation, so compare with care; rates based on a handful of inspections say little. FMCSA's own SMS measures are weighted differently: SMS profile · SAFER snapshot
Violations in FMCSA's SMS last 24 months
271 violations counted in FMCSA's Safety Measurement System (SMS), 49 of them serious enough to put the driver or vehicle out of service.
Why is this different from the 373 violations above?
The inspections section's number counts every violation written on the inspection reports in our Oct 20, 2024 – Oct 20, 2026 window. The SMS count comes from FMCSA's own monthly SMS snapshot, which uses its own 24-month window and only the violations it scores. Both are FMCSA figures; they measure different things.
| Category (FMCSA BASIC) | Violations | Out of service | Share | California share |
|---|---|---|---|---|
| Vehicle Maintenance | 221 | 40 | 81.5% | 71.8% |
| Hazardous Materials Compliance | 37 | 8 | 13.7% | 0.3% |
| Hours-of-Service Compliance | 6 | 0 | 2.2% | 16.6% |
| Unsafe Driving | 6 | 0 | 2.2% | 8.0% |
| Driver Fitness | 1 | 1 | 0.4% | 3.2% |
10 most frequent violations
| Violation | Times | Out of service |
|---|---|---|
| Brake Out of Adjustment - Roto Clamp (Short & Long) DD-3 or Bolt Brakes Out of Adjustment · Vehicle Maintenance · code 39347E | 30 | 0 |
| Air Brake - CMV manufactured on or after 10/20/1994 has an automatic airbrake adjustment system that fails to compensate for wear Brakes All Others · Vehicle Maintenance · code 39353BB | 17 | 0 |
| Air Brake - ABS malfunction lamp defective on trailers manufactured on or after March 1 1998 Brakes All Others · Vehicle Maintenance · code 39355EB | 16 | 0 |
| Air Brake - Hose/tubing damage into the outer reinforcement ply. Brakes All Others · Vehicle Maintenance · code 39345B2BHTD | 14 | 10 |
| Brake - Defective brake(s) are equal to or greater than 20% of the service brakes on the vehicle/combination Brake Out Of Service · Vehicle Maintenance · code 3963A1BOS | 9 | 9 |
| Air Brake - Audible air leak at a proper connection Brakes All Others · Vehicle Maintenance · code 39345DB | 9 | 0 |
| Air Brake - Hose/tubing damaged or not secured Brakes All Others · Vehicle Maintenance · code 39345B2BAIR | 8 | 2 |
| HM (Packaging) - DOT 406/407/412 supports and anchoring requirements. Package Integrity - HM · Hazardous Materials Compliance · code 1783456HMP | 8 | 0 |
| Hubs - Wheel seal leaking Wheels Studs Clamps Etc. · Vehicle Maintenance · code 3965BHWSL | 7 | 1 |
| Brake - Audible air leak from a brake chamber Brakes All Others · Vehicle Maintenance · code 3963A1BALAC | 7 | 0 |
Source: FMCSA SMS violation file, inspections in the last 24 months, published Oct 20, 2026. "Share" is this company's mix of violations; the California column is the mix across all California-based carriers, so you can see which kinds of problems stand out. A high count partly reflects fleet size and how often trucks are inspected.
Crashes Oct 20, 2024 – Oct 20, 2026
10 most recent crashes
| Date | Location | Fatalities | Injuries |
|---|---|---|---|
| Jul 19, 2026 | Unincorporated, CA | 0 | 0 |
| May 8, 2026 | Unincorporated, CA | 0 | 4 |
| Apr 25, 2026 | Unincorporated, CA | 0 | 0 |
| Apr 14, 2026 | Pasadena, CA | 0 | 1 |
| Jan 25, 2026 | Unincorporated, CA | 0 | 0 |
| Sep 26, 2025 | Santa Fe Springs, CA | 0 | 0 |
| Apr 7, 2025 | Unincorporated, CA | 0 | 0 |
| Mar 23, 2025 | Monterey Park, CA | 0 | 1 |
| Mar 17, 2025 | Unincorporated, CA | 0 | 1 |
| Feb 21, 2025 | Fresno, CA | 0 | 0 |
Reportable crashes do not imply the carrier was at fault.
Company details FMCSA census · Oct 20, 2026
| USDOT number | 229047 |
|---|---|
| MC / docket | MC197435 |
| Legal name | WILLIAMS TANK LINES LLC |
| DBA name | WILLIAMS TANK LINES |
| Operation | Interstate |
| Business type | Corporation |
| Power units | 336 |
| Drivers | 347 |
| Annual mileage | 13,000,000 (2024) |
| Hazmat | Yes |
| Safety rating | Satisfactory (May 19, 2014) |
| USDOT number added | Feb 22, 1983 · 43 years ago |
| Last MCS-150 update | Apr 1, 2025 |
| Email domain on file | @williamstankline.com |
Equipment as declared on the MCS-150
| Owned | Term-leased | |
|---|---|---|
| Tractors | 46 | 0 |
| Straight trucks | 115 | 0 |
Term-leased equipment usually belongs to owner-operators driving under this company's authority.
Cargo carried
Liquids/GasesOtherPetroleum Products
Change history
No changes to name, contact details, authority or insurance since we started tracking on Oct 18, 2026. We compare every company's FMCSA record each day.
to see it on your watchlist when something changes.
Questions about Williams Tank Lines LLC
Is Williams Tank Lines LLC a broker or a carrier?
Both. Williams Tank Lines LLC holds active broker authority and active authority to haul freight. Check which role it is acting in on your load: as a broker it arranges another carrier; as a carrier it hauls with its own trucks.
What does Williams Tank Lines LLC's operating authority allow?
MC197435: Motor carrier (may haul regulated property for hire); Broker (may arrange transportation by other authorized carriers, but may not haul the freight itself under this authority).
Which information about Williams Tank Lines LLC is old or missing?
Nothing notable: authority and insurance come from current Motus data and there is enough inspection history to compare.
What should I verify before booking Williams Tank Lines LLC?
Confirm the authority and insurance on the Motus record for USDOT 229047. Call the company back on the phone number on file, (209) 944-5613, not a number from an email or load board message. Check that the MC number the dispatcher gave you matches MC197435, and ask for a certificate of insurance naming you as holder, with cargo coverage that fits your load; if it brokers your load, ask for proof of its BMC-84/85 bond or trust instead.
Other trucking companies in Stockton, CA →
Company details from the FMCSA Company Census File (Oct 20, 2026). Inspections and crashes from FMCSA MCMIS files. About our data · Report an error on this page (how corrections work).
Page generated 2026-10-20 14:45 UTC.