R H Hummer Jr Inc is an active interstate carrier based in Williamsburg, IA.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 27 | 0 | 0 |
| Tractors | 27 | 0 | 0 |
| Trailers | 89 | 0 | 0 |
| Total Power Units | 27 | ||
Distinct vehicles · 24 mo
vs 27 self-reported (MCS-150)
Top makes
Registered in
Higher values = more violations. 0 = clean record.
| Category |
|---|
| Category | vs. Cohort | vs. State | Reading |
|---|---|---|---|
| Unsafe Driving | 53% | 83% | Around peer average |
| HOS Compliance | 80% | 95% | Worse than most peers |
| Driver Fitness | 68% | 94% | Around peer average |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 82% | 92% | 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 | 5 | — | 22.26% |
| Hazmat | 0 | 0 | — |
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| Jan 1, 2025 | 0 | 0 | 1 | 1 |
| Oct 1, 2024 | 0 | 0 | 2 | 2 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 13 | 1 | 3 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Dec 4, 2025 | MO | TRUCK TRACTOR | 0 | 0 |
| Oct 8, 2025 | KS | TRUCK TRACTOR | 0 | 0 |
| Sep 18, 2025 | SD | TRUCK TRACTOR | 0 | 0 |
| Jul 30, 2025 | SD | TRUCK TRACTOR | 0 | 0 |
| Jun 12, 2025 | IA | TRUCK TRACTOR |
| Insp w/ Viol |
|---|
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 4 | 1.08 | — |
| HOS Compliance | 4 | 0.35 | — |
| Vehicle Maintenance | 2 | 8.11 | — |
| Driver Fitness | 1 | 0.02 | — |
| Controlled Substances | 0 | 0.00 | — |
| 4.44% |
Where they run
Inspected in 8 states. Top state IA accounts for 46% of activity. Activity outside home state (IA): 54%.
+3 other states with fewer inspections
| Hours-of-Service Compliance |
| 5 |
| 1 |
| 0 |
| Unsafe Driving | 5 | 4 | 0 |
| Driver Fitness | 1 | 0 | 0 |
| 0 |
| 0 |
| May 20, 2025 | SD | TRUCK TRACTOR | 0 | 0 |
| May 13, 2025 | SD | TRUCK TRACTOR | 0 | 0 |
| May 13, 2025 | IA | TRUCK TRACTOR | 12 | 4 |
| Feb 28, 2025 | SD | TRUCK TRACTOR | 0 | 0 |
| Feb 25, 2025 | SD | TRUCK TRACTOR | 0 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| May 13, 2025 | 393104A | Inadequate/damaged securement device/system | Vehicle Maintenance | — |
| May 13, 2025 | 39311 | No or defective lighting devices or reflective material as required | Vehicle Maintenance | — |
| May 13, 2025 | 39311TL | Truck-Tractor lower rear mud flaps retroreflective sheeting / reflex reflective material requirements for vehicles manufactured after July 1997 | Vehicle Maintenance | — |
| May 13, 2025 | 39311TU | Truck-Tractor upper body corner requirements for retroreflective sheeting or reflex reflective material for vehicles manufactured after July 1997 | Vehicle Maintenance | — |
| May 13, 2025 | 39345B2 | Brake hose or tubing chafing and/or kinking | Vehicle Maintenance | Yes |
| May 13, 2025 | 39345B2PC | Brake Hose or Tubing Chafing and/or Kinking - Connection to Power Unit | Vehicle Maintenance | Yes |
| May 13, 2025 | 39345D | Brake connections with leaks or constrictions | Vehicle Maintenance | — |
| May 13, 2025 | 39347E | Brake Out of Adjustment - Roto Clamp (Short & Long) DD-3 or Bolt | Vehicle Maintenance | — |
| May 13, 2025 | 39353B | CMV manufactured after 10/19/94 has an automatic airbrake adjustment system that fails to compensate for wear | Vehicle Maintenance | — |
| May 13, 2025 | 39355C1 | Truck Tractor manufactured on or after March 1 1997 not equipped with an antilock brake system | Vehicle Maintenance | — |