Sioux Falls Tower Specialists Inc is an active interstate carrier based in Sioux Falls, SD.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 99 | 0 | 0 |
| Trailers | 118 | 0 | 0 |
| Total Power Units | 99 | ||
Distinct vehicles · 24 mo
vs 99 self-reported (MCS-150)
Top makes
Registered in
Higher values = more violations. 0 = clean record.
| Category | vs. Cohort | vs. State | Reading |
|---|---|---|---|
| Unsafe Driving | 70% | 89% | Around peer average |
| HOS Compliance | 70% | 92% | Around peer average |
| Driver Fitness | 90% | 95% | Worse than most peers |
| Controlled Substances | 100% | 99% | Worse than most peers |
| Vehicle Maintenance | 50% | 83% | Around peer average |
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 | 4 | — | 6.67% |
| Vehicle | 0 | 11 | — | 22.26% |
| Hazmat | 0 | 0 | — |
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| Apr 1, 2025 | 1 | 3 | 1 | 1 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 27 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Sep 11, 2026 | KY | STRAIGHT TRUCK | 3 | 1 |
| Sep 9, 2026 | SD | STRAIGHT TRUCK | 1 | 0 |
| Aug 19, 2026 | IA | STRAIGHT TRUCK | 1 | 0 |
| Aug 6, 2026 | SD | STRAIGHT TRUCK | 0 | 0 |
| Category |
|---|
| Insp w/ Viol |
|---|
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 8 | 0.43 | — |
| HOS Compliance | 1 | 0.14 | — |
| Vehicle Maintenance | 10 | 5.15 | — |
| Driver Fitness | 2 | 0.89 | — |
| Controlled Substances | 1 | 0.06 | — |
| 4.44% |
Where they run
Inspected in 18 states. Top state IA accounts for 23% of activity. Activity outside home state (SD): 91%.
+13 other states with fewer inspections
| 10 |
| Unsafe Driving | 9 | 2 | 0 |
| Driver Fitness | 2 | 1 | 2 |
| Controlled Substances/​Alcohol | 1 | 0 | 1 |
| Hours-of-Service Compliance | 1 | 0 | 1 |
| May 22, 2026 |
| IA |
| STRAIGHT TRUCK |
| 3 |
| 3 |
| Mar 31, 2026 | MO | STRAIGHT TRUCK | 0 | 0 |
| Feb 20, 2026 | MS | STRAIGHT TRUCK | 2 | 1 |
| Feb 12, 2026 | IA | STRAIGHT TRUCK | 2 | 2 |
| Jan 16, 2026 | OK | STRAIGHT TRUCK | 1 | 0 |
| Dec 3, 2025 | MA | STRAIGHT TRUCK | 1 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Sep 11, 2026 | 38323A2LCDLN | License (CDL) - Operate a CMV and does not possess a valid CDL | Driver Fitness | Yes |
| Sep 11, 2026 | 39375CTAOTDLT232 | Tires - Less than 2/32 inch tread depth | Vehicle Maintenance | — |
| Sep 11, 2026 | 39381H | Horn - Inoperative or defective | Vehicle Maintenance | — |
| Sep 9, 2026 | 39395A1 | Emergency Equipment - Fire Extinguishers - no fire extinguisher present or not properly rated. | Vehicle Maintenance | — |
| Aug 19, 2026 | 3922SLLS3 | State/Local Laws - Speeding 11-14 miles per hour over the speed limit | Unsafe Driving | — |
| May 22, 2026 | 39343D | No or defective automatic trailer brake | Vehicle Maintenance | Yes |
| May 22, 2026 | 39375A1 | Tire-ply or belt material exposed | Vehicle Maintenance | — |
| May 22, 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 |
| Feb 20, 2026 | 39111B1A | Age - Operate a CMV while not at least 21 years of age in interstate commerce | Driver Fitness | Yes |
| Feb 20, 2026 | 3922SLLS2 | State/Local Laws - Speeding 6-10 miles per hour over the speed limit | Unsafe Driving | — |