SIERRA WES WALL SYSTEMS INC
Risk factors
Low 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 202633 inspections · 54 violations (13 OOS) · 20% of inspections had an OOS finding.
Violations by BASIC
click to filter codes
Top cited codes
score = count × severity weight
- 1393.75A3-TAOLVehicle Maintenance2 OOS
Tires - All others, leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS
16
2× · sev 8
- 2392.2-SLLTCDUnsafe Driving
State/Local Laws - Failed to obey a traffic control device - Permanent or Temporary - e.g., safety official, signal, sign, light, lane marking, other
10
2× · sev 5
- 3393.75C-TAOTD-LT1/32Vehicle Maintenance
Tires - Less than 1/32 inch tread depth at 3 locations/2 adjacent tread grooves
8
1× · sev 8
- 4383.91A-LCDLDriver Fitness1 OOS
License (CDL) - Operate a CMV without proper CDL class
8
1× · sev 8
- 5392.2-SLLSR
State/Local Laws - State registration/tag violation
7
7×
- 6393.9A-LHLIVehicle Maintenance
Lighting - Headlamp(s) - Any inoperative
6
1× · sev 6
- 7393.45D-BAALVehicle Maintenance1 OOS
Air Brake - Audible air leak at other than a proper connection
4
1× · sev 4
- 8392.2-SLLEQP
State/Local Laws - Violation of state and local law - Equipment violation.
1
1×
- 9393.95F
Emergency Equipment - Stopped vehicle warning devices missing or improper
1
1×
- 10393.67C7V-FVehicle Maintenance1 OOS
Fuel - Missing/improper filler cap
1
1× · sev 1
Most inspected in · top 1 states
- CA30
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.
Driver out-of-service rate exceeds the national average
High impactDriver OOS rate is 8.6% vs the 6.7% 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 Sacramento County, CA
Medium impact23 of 40 violations in the last 12 months (57%) came from inspections in Sacramento County, CA. 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 Sacramento County, CA to spot recurring issues
- Brief drivers running that lane; consider rerouting around the toughest enforcement corridors where practical
Following / lane / reckless violations are the leading contributor to Unsafe Driving
Low impactEstimated Unsafe Driving percentile of 34% is under the 65% line. In decent shape, but here's what's driving it.
- 392.2-SLLTCDState/Local Laws - Failed to obey a traffic control device - Permanent or Temporary - e.g., safety official, signal, sign, light, lane marking, other4× · 75%
- 392.2-SLLILCState/Local Laws - Improper lane change1× · 25%
- Defensive-driving refresher on following distance and lane discipline
Hours-of-Service Compliance needs attention
Low impactEstimated Hours-of-Service Compliance 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
Drugs / alcohol violations are the leading contributor to Controlled Substances/Alcohol
Low impactEstimated Controlled Substances/Alcohol percentile of 19% is under the 80% line. In decent shape, but here's what's driving it.
- 392.4A-DOSPDrugs/Other Substances - Operate a CMV while in possession.1× · 100%
- Reinforce the testing program and zero-tolerance policy
- Prioritize the out-of-service items — they carry the heaviest weight
Tires violations are the leading contributor to Vehicle Maintenance
Low impactEstimated Vehicle Maintenance percentile of 62% is under the 80% line. In decent shape, but here's what's driving it.
- 393.75A3-TAOLTires - All others, leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS6× · 43%
- 393.75C-TAOTD-LT1/32Tires - Less than 1/32 inch tread depth at 3 locations/2 adjacent tread grooves1× · 9%
- 393.9A-LHLILighting - Headlamp(s) - Any inoperative1× · 7%
- 393.9A-LRLILighting - Tail lamp - Any inoperative2× · 7%
- 393.9A-LILLighting - Identification lamp(s) inoperative2× · 4%
- 393.45D-BAALAir Brake - Audible air leak at other than a proper connection1× · 7%
- 393.53B-BAir Brake - CMV manufactured on or after 10/20/1994 has an automatic airbrake adjustment system that fails to compensate for wear1× · 5%
- 393.43D-BBrake - Missing or inoperable breakaway braking system on a trailer(s) or converter dolly1× · 2%
- 393.95A4-EEUSEmergency Equipment - Fire Extinguishers - unsecured2× · 3%
- 393.95A4-EENAEmergency Equipment - Fire Extinguishers - not readily accessible or filled1× · 2%
- 393.95A1Emergency Equipment - Fire Extinguishers - no fire extinguisher present or not properly rated.1× · 2%
- Gauge and thump every tire on the walk-around, including inner duals
- Replace before tread hits the limit; correct low pressure immediately
- Prioritize the out-of-service items — they carry the heaviest weight
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.
- 392.2-SLLSR×6State/Local Laws - State registration/tag violation
- 390.21TB1-MCOperating a CMV without legal name or trade name displayed
- 390.21TB2-DOTOperate a CMV without USDOT number displayed. Must be preceded by the letters USDOT
- Review these violations with drivers and add the fix to your pre-trip and PM routine
- 393.75A3-TAOLTires - All others, leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS · OOS
- 393.9A-LILLighting - Identification lamp(s) inoperative
- 393.95A4-EEUSEmergency Equipment - Fire Extinguishers - unsecured
- Gauge/thump every tire on the walk-around, including inner duals
- Replace before tread hits the limit and correct low pressure immediately
- 392.2-SLLTCDState/Local Laws - Failed to obey a traffic control device - Permanent or Temporary - e.g., safety official, signal, sign, light, lane marking, other
- 392.2-SLLILCState/Local Laws - Improper lane change
- 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 NHTSA32 distinct vehicles seen in this carrier’s roadside inspections.
+ 2 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.
Company profile
FMCSA censusPRIVATE PROPERTY
- Interstate · <100 mi20 drivers
- Intrastate · <100 mi9 drivers
- Company officer
- BRYAN STILWELL
- Operation
- Interstate
- Registered since
- 2009-07-28
- Last MCS-150 update
- 2025-11-03
- Census status
- Active
Fleet: 28 trucks.
Source: FMCSA Company Census File (data.transportation.gov). Fleet and driver counts are self-reported on the carrier’s most recent MCS-150 filing.
Data change history
Every FMCSA record change we’ve detected — address, fleet size, contacts, MCS-150 — newest first.
Connections
carrier graphThis carrier shares phone numbers or emails with 2 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
2 events- 11/03/2025MCS-150 update filed
0.6M mi reported (2025)
- 07/28/2009Registered with FMCSA
PRIVATE PROPERTY
Merged from FMCSA authority, insurance, out-of-service, and census records.
Operations
Classification
- PRIVATE PROPERTY
Area served
- Interstate
FMCSA safety rating
- Rating
- Not rated
- Type
- Non-ratable review
- Rated
- —
- Last review
- 2019-12-02
MCS-150 registration
- Form date
- 2025-11-03
- Reported mileage
- 561,000 mi (2025)
Changes on file
FMCSA census historyJanuary, 2021
First on-record entry — SIERRA WES WALL SYSTEMS INC, ,
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