SIOUX FALLS TOWER SPECIALISTS INC

DBA VIKOR

USDOT 377080 · Sioux Falls, SD

Not for-hire

Quick answers

Is SIOUX FALLS TOWER SPECIALISTS INC (USDOT 377080) allowed to operate?
Yes. As of July 20, 2026, FMCSA's live record shows SIOUX FALLS TOWER SPECIALISTS INC (USDOT 377080) is allowed to operate.
What is SIOUX FALLS TOWER SPECIALISTS INC's FMCSA safety rating?
SIOUX FALLS TOWER SPECIALISTS INC holds a Satisfactory FMCSA safety rating (rated July 6, 2004). This is FMCSA's official rating — one of Satisfactory, Conditional, or Unsatisfactory.
What is SIOUX FALLS TOWER SPECIALISTS INC's USDOT number?
SIOUX FALLS TOWER SPECIALISTS INC is registered under USDOT 377080, based in Sioux Falls, SD. FMCSA classifies it as a private (not-for-hire) carrier.
How large is SIOUX FALLS TOWER SPECIALISTS INC's fleet?
SIOUX FALLS TOWER SPECIALISTS INC reports 99 power units and 159 drivers in its FMCSA record in Sioux Falls, SD.

Answers reflect the public FMCSA record as of July 20, 2026; figures can change at any time.

Operating snapshot

99Power units (fleet size)
159Drivers reported
36Years since registration
2.9MAnnual miles reported (2023)
Sioux Falls, SDHome base
29Inspections (24 mo)

Public FMCSA census & inspection records · as of 2026-06-06

32
Low
HaulReport estimate · highest estimated percentile
Vehicle Maintenance is this carrier's highest reconstructed BASIC percentile at the 32.4th percentile among 22,065 safety-event peers. Across 3 rated categories, 3 are estimated Low. Higher percentile = more inspection-violation activity recorded relative to peers. An independent estimate, not an official FMCSA or CSA score.
Estimated from public FMCSA data · updated 2026-06-08 · How we calculate this

Sioux Falls Tower Specialists Inc, operating as VIKOR, is a private property carrier based in Sioux Falls, South Dakota, registered since 1990. The carrier operates 99 power units and 159 drivers, with 2,911,411 annual miles logged in 2023. Vehicle out-of-service inspections occurred at 31.6%, above the snapshot benchmark of 21.2%, while driver out-of-service rates were 10.3% versus the snapshot benchmark of 5.2%. HaulReport-estimated percentiles across controlled substances (8.1), hours-of-service compliance (19.1), and vehicle maintenance (32.4) are all in the low band, an independent estimate, not an official FMCSA or CSA score.

HaulReport interpretation — automatically generated from the public FMCSA data below and our percentile estimates, and checked against those source figures.

Estimated BASIC percentiles

Controlled Substances / AlcoholLow
8.1 pctl · CI 313
BASIC measure: 0.05Insp. w/ violation: 1Peer group: 7,862
Hours-of-Service ComplianceLow
19.1 pctl · CI 1424
BASIC measure: 0.13Insp. w/ violation: 29Peer group: 20,717
Vehicle MaintenanceLow
32.4 pctl · CI 2737
BASIC measure: 3.24Insp. w/ violation: 19Peer group: 22,065

Out-of-service rates

Vehicle OOS31.6%above the 21.2% snapshot benchmark · 19 inspections
Driver OOS10.3%above the 5.2% snapshot benchmark · 29 inspections

Out-of-service rate = inspections resulting in an out-of-service order ÷ inspections. The benchmark is the inspection-weighted rate across this FMCSA snapshot — not an official national average. Rates are shown only with at least 5 inspections.

MCS-150 biennial update

Due October 2026
Next biennial update dueOctober 2026
Recurring update monthOctober, even-numbered years
Last MCS-150 update on fileJuly 10, 2024

FMCSA sets each carrier's biennial update month from the last two digits of the USDOT number (last digit → month, second-to-last digit → odd/even year) — it is required even when nothing has changed. This is a schedule derived from the public rule, not a compliance determination. Verify and file on FMCSA · Deadline calculator

Live FMCSA status

Allowed to operate

Safety

  • Rating: Satisfactory (as of July 6, 2004)
  • Driver out-of-service rate: 10.0%
  • Vehicle out-of-service rate: 35.0%
  • Hazmat out-of-service rate: 80.0%

Live read from FMCSA's QCMobile system on July 20, 2026. Insurance figures are FMCSA "on file" amounts, not confirmation of current coverage; values can change at any time. FMCSA QCMobile

Carrier facts (public FMCSA data)
Verbatim public facts from FMCSA datasets. Only the percentile/band/confidence figures above are HaulReport reconstructions — not official FMCSA or CSA scores.
USDOT number377080
Legal nameSIOUX FALLS TOWER SPECIALISTS INC
Doing business asVIKOR
LocationSIOUX FALLS, SD
Operating classificationNot for-hire (per FMCSA census)
Power units (fleet size)99
Drivers159
Reported annual mileage2,911,411 (reported for 2023)
FMCSA registered1990 (~36 years)
Last MCS-150 updateJuly 10, 2024
Next MCS-150 update dueOctober 2026
Inspections (trailing 24 mo)29
Published BASIC measures3

State reference data: Truck-crash statistics for South Dakota — state-wide totals for all carriers registered in South Dakota, not specific to this carrier.

FMCSA data as of 2026-06-06 · Last synced 2026-06-08 · Method: how these percentiles are reconstructed · Canonical: https://haulreport.com/carrier/377080/