William S Simpson Co Inc is an active interstate carrier based in South Easton, MA.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 2 | 0 | 0 |
| Tractors | 2 | 0 | 0 |
| Trailers | 2 | 0 | 0 |
| Total Power Units | 4 | ||
Distinct vehicles · 24 mo
vs 4 self-reported (MCS-150)
Top makes
Registered in
Higher values = more violations. 0 = clean record.
| Category | Insp w/ Viol |
|---|
| Category | vs. Cohort | vs. State | Reading |
|---|---|---|---|
| Unsafe Driving | 95% | 95% | Worse than most peers |
| HOS Compliance | 0% | 0% | Better than most peers |
| Driver Fitness | 0% | 0% | Better than most peers |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 81% | 89% | Worse than most peers |
Lower percentile = lower SMS measure = stronger safety record. Computed nightly across active carriers in the same state and fleet-size band.
| Type | Inspections | OOS | OOS % | Nat'l Avg |
|---|---|---|---|---|
| Driver | 0 | 0 | — | 6.67% |
| Vehicle | 0 | 0 | — | 22.26% |
| Hazmat | 0 | 0 | — | 4.44% |
Where they run
Inspected in 2 states. Top state MA accounts for 67% of activity. Activity outside home state (MA): 33%.
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| No crashes recorded | 0 | 0 | 0 | 0 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Unsafe Driving | 5 | 2 | 0 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| May 14, 2025 | US | STRAIGHT TRUCK | 2 | 0 |
| Sep 6, 2024 | MA | STRAIGHT TRUCK | 2 | 0 |
| Jun 24, 2024 | MA | STRAIGHT TRUCK | 3 | 0 |
| Date |
|---|
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 2 | 5.55 | — |
| HOS Compliance | 0 | 0.00 | — |
| Vehicle Maintenance | 1 | 3.00 | — |
| Driver Fitness | 0 | 0.00 | — |
| Controlled Substances | 0 | 0.00 | — |
| Vehicle Maintenance |
| 2 |
| 0 |
| 0 |
| Code |
|---|
| Description |
|---|
| BASIC |
|---|
| OOS |
|---|
| May 14, 2025 | 39378AWS | Washers - Inoperative washing system. | Vehicle Maintenance | — |
| May 14, 2025 | 39395A4EEUS | Emergency Equipment - Fire Extinguishers - unsecured | Vehicle Maintenance | — |
| Sep 6, 2024 | 39216 | Failing to use seat belt while operating a CMV | Unsafe Driving | — |
| Sep 6, 2024 | 3922SLLS2 | State/Local Laws - Speeding 6-10 miles per hour over the speed limit | Unsafe Driving | — |
| Jun 24, 2024 | 39216 | Failing to use seat belt while operating a CMV | Unsafe Driving | — |
| Jun 24, 2024 | 3922LV | Lane Restriction violation | Unsafe Driving | — |
| Jun 24, 2024 | 3922SLLS2 | State/Local Laws - Speeding 6-10 miles per hour over the speed limit | Unsafe Driving | — |