Carrier profile · USDOT 1511513 · Updated Jun 13, 2026

Stewart Builders Inc

DBA KEYSTONE CONCRETE

30 power unitsavg 7 yrLocal · 1 statesHOUSTON, TX74/100

AUTHORITY STATUS UNKNOWN

Safety

Roadside out-of-service rates versus the national benchmark, inspection and crash trends, decoded violation themes, and ELD / hours-of-service integrity — the full safety picture behind the verdict.

Out-of-service rate· 24-mo cumulative · vs national

Vehicle OOS 44.4%24-mo cumulative

050%nat'l 22.26%

Driver OOS 0.0%24-mo cumulative

030%nat'l 6.67%

Every inspection in the window pooled — 9 vehicle and 10 driver inspections over 24 months.

Vehicle OOS rate· vehicle OOS · vehicle-level inspections · 6-month trailing

16.7% · latest 6-mo window▼ Falling

Share of vehicle-level roadside inspections in each trailing six-month window that resulted in a vehicle out-of-service order. Trending down 45.8 pts across the window. The national vehicle benchmark uses the same metric and is shown on the chart.

Roadside inspection history· 24 charted calendar months · vehicle / driver level · any-OOS overlay

11 inspections in the charted months · busiest month Oct '24 · 1

Vehicle-levelDriver-levelAny OOS

Monthly FMCSA roadside inspections across the 24 charted calendar months. Bars show level-qualified vehicle and driver populations; one inspection can qualify for both. The line shows inspections with any out-of-service result.

Inspection coverage· expected vs observed · the fraud signal

Inspection coverage

How heavily FMCSA inspects this fleet for its size — it tells you how much to trust the safety signals above. Thin coverage on a young authority is a fraud signal nobody else surfaces.

Thin coverage

Under-inspected

Expected

Well-monitored

Heavily inspected

≈0.2 / unit·yr

thin signalabundant signal

Few roadside inspections for a 30-unit fleet — the out-of-service and violation signals above rest on a small sample, so weight them cautiously. Thin coverage on a young authority is itself a flag.

Registered power units: 30
Inspections · 24 mo: 11
Annualized: ≈6 / yr
Coverage: ≈0.2 inspections / unit · yr

BASIC categories· CSA SMS · Aug 2026

Unsafe Driving

0violations

clean · per-BASIC

Hours-of-Service

0violations

clean · per-BASIC

Driver Fitness

0violations

clean · per-BASIC

Controlled Substances

0violations

clean · per-BASIC

46%

Vehicle Maintenance

Vektor peer est.

Percentile = standing among same-exposure peers (higher = worse). FMCSA publishes percentiles for only some carriers (shown official); elsewhere we show a Vektor peer-percentile estimate, or the absolute SMS measure when there are too few inspections to rank.

Violation themes· decoded · grouped by BASIC

What this carrier actually gets cited for — FMCSA violation codes decoded into plain English, ranked by frequency.

393.75 Tires (defective / underinflated / worn)Vehicle Maintenance7 · 3 OOS
392.2 State/local traffic law violation (speeding, etc.)Unsafe Driving4 · 0 OOS
393.130 Cargo securement — heavy vehicles/equipmentVehicle Maintenance4 · 2 OOS
393.11 Required lamps/reflectors missingVehicle Maintenance2 · 0 OOS
393.50 Parts & accessories (vehicle condition)Vehicle Maintenance1 · 0 OOS
396.5 Oil and/or grease leakVehicle Maintenance1 · 0 OOS
393.9 Inoperative required lampsVehicle Maintenance1 · 0 OOS
396.17 Periodic (annual) inspectionVehicle Maintenance1 · 0 OOS
393.110 Cargo securement — number of tiedownsVehicle Maintenance1 · 1 OOS
393.78 Windshield wipersVehicle Maintenance1 · 0 OOS

ELD & hours-of-service

No hours-of-service or ELD violations on record across 13 inspections — a clean logging history.

Crash history· 10 total · 3 in 24 mo

Total crashes

In last 24 mo

Fatal

Injury

Year	Crashes	Fatal	Injury	Tow
2025	2	0	1	2
2024	2	0	1	2
2023	1	0	0	1
2022	1	0	0	1
2019	1	0	0	1
2017	1	1	0	0
2012	1	0	0	1
2010	1	0	1	1

Date	State	Fatalities	Injuries	Tow-away
Dec 17, 2025	TX	0	0	Yes
Feb 10, 2025	TX	0	1	Yes
Sep 9, 2024	TX	0	0	Yes
Mar 7, 2024	TX	0	1	Yes
Feb 24, 2023	TX	0	0	Yes
Feb 11, 2022	TX	0	0	Yes
Jul 25, 2019	TX	0	0	Yes
Sep 25, 2017	TX	1	0	No
Dec 3, 2012	TX	0	0	Yes
Apr 16, 2010	TX	0	1	Yes