Winckler Trucking Safety Record
DOT# 173367 · Yankton, SD 57078 · 6056658948
Legal name: Mark a Winckler
Excellent safety record — scored 0/100 (lower is better). This carrier has one of the best inspection records on file.
Last inspected 03/02/2026
Safety Score Breakdown · 0/100 points
Lower scores are better. How is this calculated?
According to FMCSA records, Winckler Trucking (DOT# 173367) in Yankton, South Dakota has 3 inspections on record with 1 violation and a 0.0% vehicle out-of-service rate. Safety grade: A (excellent safety record). Active common authority.
Out-of-Service Rates vs. National Average
An out-of-service (OOS) violation means a vehicle or driver was found unsafe to operate during a roadside inspection and was prohibited from continuing until the issue was corrected.
Violation Categories · 1 total violation
FMCSA groups violations into Behavioral Analysis and Safety Improvement Categories (BASICs). Each violation found during a roadside inspection is classified into a category that reflects the type of safety risk.
Inspection History · 3 records
FMCSA inspections range from Level 1 (full vehicle and driver examination) to Level 6 (enhanced motorcoach inspection). Level 1 is the most thorough; Levels 2 and 3 are walk-around and driver-only checks.
| Date | State | Veh OOS | Drv OOS |
|---|---|---|---|
| 03/02/2026 | NE | 0 | 0 |
| 10/17/2025 | SD | 0 | 0 |
| 11/16/2024 | SD | 0 | 0 |
Authority & Insurance
FMCSA operating authority permits interstate for-hire transportation. Carriers must maintain minimum insurance coverage levels to keep authority active. BIPD (bodily injury and property damage) insurance is required for all for-hire carriers.
| Type | Insurer | Coverage |
|---|---|---|
| BIPD/Primary | United Financial Casualty Company | $750 |
Fleet Profile
Power units include trucks, tractors, and other commercial motor vehicles registered to the carrier. Driver count reflects the total number of drivers reported on the carrier's MCS-150 filing.