HaulerCheck · https://haulercheck.com/carrier/2954156-william-loo/ · Checked 2026-10-19 01:43 UTC · Census and inspections Oct 18, 2026 · Authority and insurance: Last known · FMCSA snapshot May 14, 2026
WILLIAM LOO
Doing business as ARIDER AUTO
No risk signals in the last-known data
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. Authority and insurance are last known from May 14, 2026.
No cargo cover filed with FMCSA
Not a live check. FMCSA has not published a Motus record for this carrier, so authority and insurance show the last known status from May 14, 2026. Confirm on Motus ↗ before booking.
What to verify next
- Confirm authority and insurance on the official Motus record ↗: our copy is the last known status from May 14, 2026. Safety record: SAFER ↗.
- Call back on the number on file, (626) 678-3378, not a number from an email or load board.
- Check that the MC number you were given is MC860.
- Ask the insurer for a certificate of insurance naming you as holder, with cargo coverage that fits your load.
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) | MC860 | Primary | UNITED FINANCIAL CASUALTY COMPANY Policy CA865151209 · 91X | $750,000 | Nov 1, 2025 | Active |
Source: Last known · FMCSA snapshot May 14, 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.
Last known filings. Insurance for this carrier comes from the FMCSA snapshot of May 14, 2026. Policies may have been cancelled or replaced since. Confirm current filings: Motus record ↗ and ask the insurer for a certificate naming you as holder.
Roadside inspections Oct 18, 2024 – Oct 18, 2026
1 of 3 · California avg 19.8%
2 of 4 · California avg 6.3%
4 most recent inspections
| Date | State | Level | Violations | Out of service |
|---|---|---|---|---|
| Apr 16, 2026 | CA | 2 | 4 | Yes |
| Jan 9, 2026 | AR | 3 | 0 | No |
| Jan 7, 2026 | AZ | 2 | 2 | No |
| Dec 27, 2025 | AZ | 2 | 9 | Yes |
How these rates are calculated
Period: Oct 18, 2024 – Oct 18, 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 398,428 vehicle and 509,934 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
13 violations counted in FMCSA's Safety Measurement System (SMS), 5 of them serious enough to put the driver or vehicle out of service.
Why is this different from the 15 violations above?
The inspections section's number counts every violation written on the inspection reports in our Oct 18, 2024 – Oct 18, 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 | 7 | 1 | 53.8% | 71.7% |
| Hours-of-Service Compliance | 3 | 3 | 23.1% | 16.6% |
| Unsafe Driving | 2 | 0 | 15.4% | 8.0% |
| Driver Fitness | 1 | 1 | 7.7% | 3.2% |
10 most frequent violations
| Violation | Times | Out of service |
|---|---|---|
| Lighting - Front - Turn signal - inoperative Lighting · Vehicle Maintenance · code 3939ALFTSI | 2 | 0 |
| Conspicuity Systems - Truck tractor upper rear retro reflective sheeting missing on vehicle manufactured on or after July 1 1997 Reflective Sheeting · Vehicle Maintenance · code 39311A1CSURR | 2 | 0 |
| License (CDL) - Operate a CMV and does not possess a valid CDL License-related: High · Driver Fitness · code 38323A2LCDLN | 1 | 1 |
| HOS (Property) - No driver may make a false report in connection with a duty status. Explain False Log · Hours-of-Service Compliance · code 3958EHOSPD | 1 | 1 |
| HOS (Property) - Driver produces a false record of duty status that concealed an HOS limitation violation after the last rest period. Explain: False Log · Hours-of-Service Compliance · code 3958EHOSPDOOS | 1 | 1 |
| HOS (Property) - Failing to have in possession RODS for the previous seven consecutive days and available for inspection while on duty Incomplete/Wrong Log · Hours-of-Service Compliance · code 3958K2HOSP | 1 | 1 |
| Tires - Less than 1/32 inch tread depth at 3 locations/2 adjacent tread grooves Tires · Vehicle Maintenance · code 39375CTAOTDLT132 | 1 | 1 |
| Driver - Failed to use seat belt while operating a CMV Seat Belt · Unsafe Driving · code 39216D | 1 | 0 |
| State/Local Laws - Speeding 15 or more miles per hour over the speed limit Speeding 4 · Unsafe Driving · code 3922SLLS4 | 1 | 0 |
| Conspicuity Systems - Truck tractor lower rear retro reflective sheeting missing on vehicle manufactured on or after July 1 1997 Reflective Sheeting · Vehicle Maintenance · code 39311A1CSLRR | 1 | 0 |
Source: FMCSA SMS violation file, inspections in the last 24 months, published Oct 18, 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 18, 2024 – Oct 18, 2026
No reportable crashes in this period.
Company details FMCSA census · Oct 18, 2026
| USDOT number | 2954156 |
|---|---|
| MC / docket | MC860 |
| Legal name | WILLIAM LOO |
| DBA name | ARIDER AUTO |
| Operation | Interstate |
| Business type | — |
| Power units | 1 |
| Drivers | 2 |
| Annual mileage | 50,000 (2024) |
| Hazmat | No |
| Safety rating | Not rated (no compliance review on record) |
| USDOT number added | Dec 13, 2016 · 9 years ago |
| Last MCS-150 update | Nov 3, 2025 |
Cargo carried
General FreightFresh ProduceMeatU.S. MailCommodities Dry BulkRefrigerated FoodBeveragesPaper ProductsUtilities
Questions about WILLIAM LOO
What does WILLIAM LOO's operating authority allow?
MC860: Common carrier (may haul regulated property for hire for the general public).
Which information about WILLIAM LOO is old or missing?
Operating authority is the last known status from the FMCSA snapshot of May 14, 2026, not a current check. Insurance filings are from the same May 14, 2026 snapshot. There are too few vehicle inspections in the last 24 months to judge the out-of-service rate. FMCSA has not issued a safety rating, which means no compliance review is on record, not that the carrier is unsafe.
What should I verify before booking WILLIAM LOO?
Confirm the authority and insurance on the Motus record for USDOT 2954156. Call the company back on the phone number on file, (626) 678-3378, not a number from an email or load board message. Check that the MC number the dispatcher gave you matches MC860, and ask the insurer for a certificate of insurance naming you as holder, with cargo coverage that fits your load.
Other trucking companies in Rosemead, CA →
Company details from the FMCSA Company Census File (Oct 18, 2026). Inspections and crashes from FMCSA MCMIS files. About our data · Report an error on this page (how corrections work).
Page generated 2026-10-19 01:43 UTC.