DAU TRANSPORTATION INC
Risk factors
Moderate riskVioCodes scoreA weighted read of the public FMCSA signals below — authority, insurance, out-of-service, crashes, roadside OOS rates, and carrier connections. A starting point for vetting, not a guarantee.
Roadside inspection performance
Out-of-service rate vs national average. Lower is better.
CSA performance breakdown
FMCSA · Sep 202635 inspections · 106 violations (21 OOS) · 53% of inspections had an OOS finding.
Violations by BASIC
click to filter codes
Top cited codes
score = count × severity weight
- 1393.9TSVehicle Maintenance2 OOS
Inoperative turn signal
24
4× · sev 6
- 2393.19Vehicle Maintenance
Inoperative/Defective Hazard Warning Lamp
18
3× · sev 6
- 3393.9Vehicle Maintenance1 OOS
Inoperable Required Lamp
8
4× · sev 2
- 4393.9BRKLAMPVehicle Maintenance1 OOS
Inoperative Brake Lamps
6
1× · sev 6
- 5396.3A1BVehicle Maintenance
Brakes (general) Explain:
4
1× · sev 4
- 6393.55E-BVehicle Maintenance
Air Brake - ABS malfunction lamp defective on trailers manufactured on or after March 1, 1998
4
1× · sev 4
- 7393.11Vehicle Maintenance
No or defective lighting devices or reflective material as required
3
1× · sev 3
- 8392.2RGNot in SMS
State vehicle registration or License Plate violation
2
2×
- 9393.60D
Windshield / Windows - Tinting permits less than 70% of light transmittance
1
1×
- 10396.5B
Oil and/or grease leak
1
1×
Most inspected in · top 3 states
- TX28
- US1
- LA1
Latest FMCSA SMS snapshot. Codes link to the lookup — severity weighting, contest angles, and the DataQs Drafter for each. Click a BASIC to filter the codes.
Safety trends & next-run projection
Where each BASIC sits today, how it ranks against peers, and where it’s heading at the next monthly SMS run.
FMCSA keeps the Crash Indicator percentile private, and its measure needs a power-unit history public data doesn’t expose — so it can’t be estimated yet. VioCodes now records power units monthly, so a calibrated Crash estimate should light up over time. These are the public crash facts (all state-reportable crashes count, regardless of fault).
“Projected” estimates the next monthly SMS run from inspections on record now. FMCSA marks the BASIC percentile itself “Not Public,” so the percentile shown is a VioCodes estimate of how the carrier ranks against its peers, presented as a likely range (shaded on the gauge) and calibrated against real carriers. Crash Indicator has no public estimate — FMCSA keeps its measures fully private. Estimates, not official FMCSA figures. Not affiliated with FMCSA.
Recommendations
What’s driving each score, what to do about it, and where it could go.
Lighting / lamps violations are the leading contributor to Vehicle Maintenance
High impactEstimated Vehicle Maintenance percentile of 95% is at/over the 80% intervention line. Carriers with a BASIC in alert are prioritized for enforcement (warning letters, audits) and inspected more often — which tends to generate still more violations.
- 393.9BRKLAMPInoperative Brake Lamps3× · 9%
- 393.45DLPCBrake Connections with Leaks - Connection to Power Unit3× · 4%
- 396.3A1BBrakes (general) Explain:2× · 3%
- 393.75A3-TAOLTires - All others, leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS2× · 7%
- Walk the lights every pre-trip and carry spare bulbs/fuses; clean lenses and check the trailer plug
- Prioritize the out-of-service items — they carry the heaviest weight
Vehicle out-of-service rate exceeds the national average
High impactVehicle OOS rate is 47.2% vs the 22% national average. Carriers above the national OOS average draw more enforcement attention (audits, roadside stops) and can see higher insurance premiums.
- Review recent inspections with out-of-service violations and fix the root causes with equipment and drivers
- Run a preventative-maintenance program; periodically inspect tires, brakes and lights
- Reinforce thorough pre-trip and post-trip inspections; retrain where needed
A high share of violations are occurring in Harris County, TX
Medium impact43 of 75 violations in the last 12 months (57%) came from inspections in Harris County, TX. That can mean tougher enforcement there or simply more of your miles run through it — either way it's worth a look.
- Review the inspections from Harris County, TX to spot recurring issues
- Brief drivers running that lane; consider rerouting around the toughest enforcement corridors where practical
Unsafe Driving needs attention
Low impactEstimated Unsafe Driving percentile of 0% is under the 65% line. In decent shape, but here's what's driving it.
- Review recent inspections with violations in this BASIC and take remedial action with drivers/equipment
Controlled Substances/Alcohol needs attention
Low impactEstimated Controlled Substances/Alcohol percentile of 0% is under the 80% line. In decent shape, but here's what's driving it.
- Review recent inspections with violations in this BASIC and take remedial action with drivers/equipment
Recommendations are generated from the carrier’s public FMCSA roadside-inspection record. Percentiles and projections are VioCodes estimates, not official FMCSA figures. Informational, not legal advice.
90-day safety improvement plan
What this carrier has struggled with most in the last 90 days — where to focus now.
- 393.55D2CMV manufactured on/after 3/1/2001 not equipped with ABS malfunction circuit / lamp from towed vehicle in cab
- 393.203ACab door missing/broken
- 393.201AFrame cracked / loose / sagging / broken · OOS
- Walk the lights every pre-trip and carry spare bulbs/fuses
- Clean lenses and check the trailer plug for corrosion
Based on roadside inspections in the last 90 days, ranked by what recurs most. Informational, not legal advice.
Inspection & crash map
live · FMCSA MCMISEvery inspection and crash on record — hover a point for the summary, click for full detail (codes, severity, CSA points).
CSA points = violation severity weight × FMCSA time weight (3× in the last 6 months, 2× at 6–12, 1× at 12–24). Points are spread within each state — FMCSA records the inspection state, not an exact location. Source: FMCSA MCMIS.
Equipment
VINs via NHTSA59 distinct vehicles seen in this carrier’s roadside inspections.
+ 29 more.
Equipment is inferred from VINs recorded on roadside inspections (FMCSA MCMIS), decoded via the NHTSA vPIC API — it reflects vehicles inspected, not a current fleet roster.
Crash record (US, last 24 months)
Total
4
Tow-away
4
Injury
1
Fatal
0
Company profile
FMCSA censusAUTHORIZED FOR HIRE
- Interstate · 100+ mi11 drivers
- Interstate · <100 mi6 drivers
- Company officer
- NGUYET VIVIAN DAU
- Operation
- Interstate
- Registered since
- 2015-02-18
- Last MCS-150 update
- 2025-10-03
- Census status
- Active
Fleet: 17 trucks · 17 leased/term tractors.
Source: FMCSA Company Census File (data.transportation.gov). Fleet and driver counts are self-reported on the carrier’s most recent MCS-150 filing.
Connections
carrier graphThis carrier shares VINs with 17 other carriers — review the connections below as part of your vetting.
Shared VINs come from FMCSA roadside-inspection records — a vehicle inspected under more than one carrier, often a fleet transfer or trailer interchange. Other links come from the FMCSA census. Shared identifiers are common and often legitimate — treat these as leads to investigate, not proof of wrongdoing.
Activity history
19 events- 03/23/2026Insurance filed — WORTH INSURANCE CO
Liability (BIPD) — BMC-91X · policy HGAT250211-2
- 03/23/2026Insurance cancelled — WORTH INSURANCE CO
BIPD/Primary · policy HGAT250211
- 02/24/2026COMMON — INVOLUNTARY REVOCATION
DISCONTINUED REVOCATION (03/23/2026)
- 10/03/2025MCS-150 update filed
1.3M mi reported (2024)
- 03/23/2025Insurance cancelled — OBSIDIAN INSURANCE COMPANY
BIPD/Primary · policy AWT-00000139-00
- 02/24/2025COMMON — INVOLUNTARY REVOCATION
DISCONTINUED REVOCATION (03/24/2025)
- 03/23/2024Insurance replaced — SENTRY SELECT INSURANCE COMPANY
BIPD/Primary · policy A0099006002
- 03/23/2021Insurance replaced — UNITED SPECIALTY INSURANCE COMPANY
BIPD/Primary · policy GWP52999 00
- 03/23/2020Insurance cancelled — NEW YORK MARINE & GENERAL INS. CO.
BIPD/Primary · policy AU201900016744
- 02/25/2020COMMON — INVOLUNTARY REVOCATION
DISCONTINUED REVOCATION (03/23/2020)
- 03/23/2019Insurance replaced — SENTRY SELECT INSURANCE COMPANY
BIPD/Primary · policy A0099006001
- 03/23/2018Insurance cancelled — HALLMARK COUNTY MUTUAL INSURANCE COMPANY
BIPD/Primary · policy A42502048-02
- 02/26/2018COMMON — INVOLUNTARY REVOCATION
DISCONTINUED REVOCATION (03/21/2018)
- 03/23/2017Insurance cancelled — HALLMARK COUNTY MUTUAL INSURANCE COMPANY
BIPD/Primary · policy A42502048-01
- 02/24/2017COMMON — INVOLUNTARY REVOCATION
DISCONTINUED REVOCATION (03/21/2017)
- 03/23/2016Insurance cancelled — HALLMARK COUNTY MUTUAL INSURANCE COMPANY
BIPD/Primary · policy A42502048
- 02/25/2016COMMON — INVOLUNTARY REVOCATION
DISCONTINUED REVOCATION (03/22/2016)
- 03/27/2015MOTOR PROPERTY COMMON CARRIER — GRANTED
- 02/18/2015Registered with FMCSA
AUTHORIZED FOR HIRE
Merged from FMCSA authority, insurance, out-of-service, and census records.
Operations
Classification
- AUTHORIZED FOR HIRE
Area served
- Interstate
FMCSA safety rating
- Rating
- Not rated
- Type
- —
- Rated
- —
- Last review
- —
MCS-150 registration
- Form date
- 2025-10-03
- Reported mileage
- 1,348,821 mi (2024)
Got a violation you want to contest?
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