SIERRA INSULATION CO 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 20265 inspections · 8 violations (0 OOS) · 0% of inspections had an OOS finding.
Violations by BASIC
click to filter codes
Top cited codes
score = count × severity weight
- 1392.2-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
5
1× · sev 5
- 2392.2-SLLS2Unsafe Driving
State/Local Laws - Speeding 6-10 miles per hour over the speed limit
4
1× · sev 4
- 3392.2-SLLSR
State/Local Laws - State registration/tag violation
2
2×
- 4393.9A-LILVehicle Maintenance
Lighting - Identification lamp(s) inoperative
2
1× · sev 2
- 5393.95A4-EEUSVehicle Maintenance
Emergency Equipment - Fire Extinguishers - unsecured
2
1× · sev 2
- 6390.21TB2-DOT
Operate a CMV without USDOT number displayed. Must be preceded by the letters USDOT
1
1×
- 7392.2-SLL
State/Local Laws -
1
1×
Most inspected in · top 1 states
- CA5
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.
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
Driver Fitness needs attention
Low impactEstimated Driver Fitness 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
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.
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 NHTSA4 distinct vehicles seen in this carrier’s roadside inspections.
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 mi11 drivers
- Intrastate · <100 mi9 drivers
- Company officer
- TIM WILLIAMS
- Operation
- Interstate
- Registered since
- 2005-07-18
- Last MCS-150 update
- 2026-04-16
- Census status
- Active
Fleet: 11 trucks · 3 owned trailers.
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 officers with 38 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- 04/16/2026MCS-150 update filed
0.3M mi reported (2024)
- 07/18/2005Registered 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
- 2021-06-22
MCS-150 registration
- Form date
- 2026-04-16
- Reported mileage
- 250,000 mi (2024)
Changes on file
FMCSA census historyFebruary, 2021
- Drivers shrank to 12
January, 2021
First on-record entry — SIERRA INSULATION CO INC, ,
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