J Warren Walker & Sons Inc is an active interstate carrier based in Baltimore, MD.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 15 | 0 | 0 |
| Tractors | 1 | 0 | 0 |
| Trailers | 5 | 0 | 0 |
| Total Power Units | 16 | ||
Distinct vehicles · 24 mo
vs 16 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 | 58% | 87% | Around peer average |
| 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 | 78% | 86% | 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 | 2 | — | 22.26% |
| Hazmat | 0 | 0 | — |
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| No crashes recorded | 0 | 0 | 0 | 0 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 14 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Mar 9, 2026 | MD | STRAIGHT TRUCK | 2 | 0 |
| Mar 7, 2026 | MD | STRAIGHT TRUCK | 1 | 0 |
| Feb 16, 2026 | MD | STRAIGHT TRUCK | 1 | 0 |
| Jan 19, 2026 | MD | STRAIGHT TRUCK | 1 | 1 |
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 1 | 0.53 | — |
| HOS Compliance | 0 | 0.00 | — |
| Vehicle Maintenance | 8 | 5.25 | — |
| Driver Fitness | 0 | 0.00 | — |
| Controlled Substances | 0 | 0.00 | — |
| 4.44% |
Where they run
Inspected in 1 state. Top state MD accounts for 100% of activity. Activity outside home state (MD): 0%.
| 3 |
| 2 |
| Unsafe Driving | 1 | 0 | 0 |
| Jan 13, 2026 | MD | STRAIGHT TRUCK | 2 | 0 |
| Dec 9, 2025 | MD | STRAIGHT TRUCK | 1 | 1 |
| Dec 8, 2025 | MD | STRAIGHT TRUCK | 0 | 0 |
| Oct 23, 2025 | MD | STRAIGHT TRUCK | 2 | 0 |
| Mar 26, 2025 | MD | STRAIGHT TRUCK | 4 | 0 |
| Jan 27, 2025 | MD | STRAIGHT TRUCK | 0 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Mar 9, 2026 | 39355BB | Hydraulic Brake - ABS malfunction lamp defective on truck/bus manufactured on or after March 1 1999 | Vehicle Maintenance | — |
| Mar 9, 2026 | 39617CPI | Operating a CMV without documentation of a periodic inspection | Vehicle Maintenance | — |
| Mar 7, 2026 | 3939AHLLH | Lighting - Headlamp(s) fail to operate on low and high beam | Vehicle Maintenance | — |
| Feb 16, 2026 | 3922SLLLR | State/Local Laws - Lane restriction violation | Unsafe Driving | — |
| Jan 19, 2026 | 39375A3TAOL | Tires - All others leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS | Vehicle Maintenance | Yes |
| Jan 13, 2026 | 39355AB | Hydraulic Brake - ABS defective on truck/bus manufactured on or after March 1 1999 | Vehicle Maintenance | — |
| Jan 13, 2026 | 39395A1 | Emergency Equipment - Fire Extinguishers - no fire extinguisher present or not properly rated. | Vehicle Maintenance | — |
| Dec 9, 2025 | 393100BC | Cargo - Cargo not secured to prevent leaking/spilling/blowing/falling from CMV | Vehicle Maintenance | Yes |
| Oct 23, 2025 | 39381H | Horn - Inoperative or defective | Vehicle Maintenance | — |
| Oct 23, 2025 | 39617CPI | Operating a CMV without documentation of a periodic inspection | Vehicle Maintenance | — |