HaulWARREN TRANSPORT INC
USDOT 1896 · WATERLOO, IA
Warren Transport Inc is a for-hire motor carrier based in Waterloo, Iowa, operating 375 power units and 372 drivers since 1974. In 2024, the carrier logged approximately 30.1 million miles. Vehicle out-of-service inspections occurred at 30.9%, compared to the snapshot benchmark of 21.2%, while driver out-of-service inspections were 1.0%, below the snapshot benchmark of 5.2%. HaulReport-estimated percentiles show controlled substances at 4.9 (low, an independent estimate, not an official FMCSA or CSA score), hours-of-service compliance at 12.4 (low), and vehicle maintenance at 59.7 (moderate).
HaulReport interpretation — automatically generated from the public FMCSA data below and our percentile estimates, and checked against those source figures.
Estimated BASIC percentiles
Out-of-service rates
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 June 2027FMCSA 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
Carrier facts (public FMCSA data)
| USDOT number | 1896 |
|---|---|
| Legal name | WARREN TRANSPORT INC |
| Location | WATERLOO, IA |
| Operating classification | Authorized for-hire (per FMCSA census) |
| Power units (fleet size) | 375 |
| Drivers | 372 |
| Reported annual mileage | 30,093,689 (reported for 2024) |
| FMCSA registered | 1974 (~52 years) |
| Last MCS-150 update | May 1, 2025 |
| Next MCS-150 update due | June 2027 |
| Inspections (trailing 24 mo) | 491 |
| Published BASIC measures | 3 |