SUN LEE 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 202662 inspections · 41 violations (6 OOS) · 17% 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
10
2× · sev 5
- 2392.4A-DOSPControlled Substances/Alcohol1 OOS
Drugs/Other Substances - Operate a CMV while in possession.
10
1× · sev 10
- 3392.4A-DOSUControlled Substances/Alcohol1 OOS
Drugs/Other Substances - Operate a CMV while under the influence or evidence of use within the past 24 hours.
10
1× · sev 10
- 4383.23A2-LCDLNDriver Fitness1 OOS
License (CDL) - Operate a CMV and does not possess a valid CDL
8
1× · sev 8
- 5393.9A-LTSIVehicle Maintenance1 OOS
Lighting - Turn signal - Any inoperative on the rearmost vehicle.
6
1× · sev 6
- 6396.17C-PIVehicle Maintenance
Operating a CMV without documentation of a periodic inspection
4
1× · sev 4
- 7392.2-SLLSR
State/Local Laws - State registration/tag violation
3
3×
- 8396.5B-LVehicle Maintenance
Lubrication - Oil or grease leak
3
1× · sev 3
- 9392.2-SLLEWA1
State/Local Laws - Excessive weight - 1-2500 lbs over on an axle/axle groups
2
2×
- 10392.2-SLLDL
State/Local Laws - Misc. driver's license violation
1
1×
Most inspected in · top 3 states
- CA21
- WA8
- NV1
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 qualification / CDL / medical violations are the leading contributor to Driver Fitness
High impactEstimated Driver Fitness percentile of 82% 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.
- 383.23A2-LCDLNLicense (CDL) - Operate a CMV and does not possess a valid CDL4× · 83%
- 391.41A-MCPCMedical (Certificate) - Operating a commercial motor vehicle without showing proof of a valid medical certification upon request, but presents proof prior to com5× · 12%
- 391.41APCMedical (Certificate) - Operating a property-carrying vehicle without a valid medical certificate in possession or on file with the state drivers licensing agency1× · 5%
- Run a credential-expiration tracker; keep DQ files complete and the medical card on the driver
- Prioritize the out-of-service items — they carry the heaviest weight
Driver out-of-service rate exceeds the national average
High impactDriver OOS rate is 14.3% 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 Alameda County, CA
Medium impact12 of 41 violations in the last 12 months (29%) came from inspections in Alameda 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 Alameda 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 54% 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, other3× · 41%
- 392.2-SLLLRState/Local Laws - Lane restriction violation2× · 14%
- 392.2-SLLS4State/Local Laws - Speeding 15 or more miles per hour over the speed limit2× · 23%
- 392.2-SLLS2State/Local Laws - Speeding 6-10 miles per hour over the speed limit1× · 14%
- Defensive-driving refresher on following distance and lane discipline
Log / ELD device violations are the leading contributor to Hours-of-Service Compliance
Low impactEstimated Hours-of-Service Compliance percentile of 47% is under the 65% line. In decent shape, but here's what's driving it.
- 395.34A1-ELDDFNHOS (ELD) - Driver failed to note the malfunction of the ELD and provide written notice of the malfunction to the motor carrier within 24 hours1× · 20%
- 395.20BELDNVHOS (ELD) - The ELD display screen is not viewable by an authorized official without entering the CMV1× · 10%
- 395.30B1-ELDDFRHOS (ELD) - Driver failing to review records and certify the accuracy of the information.2× · 6%
- 395.8A1-HOSPHOS (Property) - Failing to have a record of duty status using the method prescribed3× · 42%
- Make sure the ELD is registered, working, and drivers know how to log in and certify daily
- Prioritize the out-of-service items — they carry the heaviest weight
Drugs / alcohol violations are the leading contributor to Controlled Substances/Alcohol
Low impactEstimated Controlled Substances/Alcohol percentile of 55% 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.2× · 50%
- 392.4A-DOSUDrugs/Other Substances - Operate a CMV while under the influence or evidence of use within the past 24 hours.2× · 50%
- Reinforce the testing program and zero-tolerance policy
- Prioritize the out-of-service items — they carry the heaviest weight
Lighting / lamps violations are the leading contributor to Vehicle Maintenance
Low impactEstimated Vehicle Maintenance percentile of 48% is under the 80% line. In decent shape, but here's what's driving it.
- 393.9A-LTSILighting - Turn signal - Any inoperative on the rearmost vehicle.3× · 14%
- 393.9A-LHLILighting - Headlamp(s) - Any inoperative1× · 5%
- 393.11A1-CSLRRConspicuity Systems - Truck tractor, lower rear retro reflective sheeting missing on vehicle manufactured on or after July 1, 19971× · 4%
- 393.45D-BAir Brake - Audible air leak at a proper connection2× · 7%
- 393.45B2-B-AIRAir Brake - Hose/tubing damaged or not secured1× · 4%
- 393.55D1-BAir Brake - ABS malfunction lamp defective on truck-tractor manufactured on or after March 1, 1997 and each single unit CMV on or after 1998.1× · 4%
- 393.70B1I-CDFAMCoupling - Sliding fifth wheel fore/aft stop is missing/not secured3× · 9%
- 396.5-HLHubs - Leaking hub1× · 2%
- 396.5B-HWSLHubs - Wheel seal leaking1× · 1%
- 393.207A-STBWSuspension - Suspension connecting rod or tracking component assembly missing the rubber bushing or the rubber bushing is worn to the extent that the component ca2× · 7%
- 393.207A-STCBSuspension - Suspension connecting rod or tracking component assembly (including spring leaves used as a suspension connecting rod) or any part used for attaching1× · 3%
- 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
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.
- 393.45D-BAir Brake - Audible air leak at a proper connection
- 393.11A1-CSLRRConspicuity Systems - Truck tractor, lower rear retro reflective sheeting missing on vehicle manufactured on or after July 1, 1997
- Check brake adjustment and listen for air leaks every pre-trip
- Fix air-loss and warning-light faults before dispatch; put brakes on the PM schedule
- 392.2-SLLEWA1State/Local Laws - Excessive weight - 1-2500 lbs over on an axle/axle groups
- 392.2-SLLSRState/Local Laws - State registration/tag violation
- Look under the truck for shifted axles and broken/leaking suspension parts
- Include suspension in scheduled maintenance
- 392.2-SLLLRState/Local Laws - Lane restriction violation
- Coach speed and following distance — Unsafe Driving points are weighted heavily
- Hands off the phone; always belt up
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 NHTSA21 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.
Crash record (US, last 24 months)
Total
2
Tow-away
2
Injury
2
Fatal
0
Company profile
FMCSA censusPRIVATE PROPERTY
- Interstate · 100+ mi3 drivers
- Intrastate · <100 mi17 drivers
- Company officer
- SUPAK PITAKNARONGPHORN
- Operation
- Interstate
- Registered since
- 1995-07-24
- Last MCS-150 update
- 2026-03-02
- Census status
- Active
Fleet: 26 trucks · 6 owned tractors · 8 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 VINs with 1 other carrier — 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- 03/02/2026MCS-150 update filed
0.7M mi reported (2024)
- 07/24/1995Registered 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
- 2022-04-26
MCS-150 registration
- Form date
- 2026-03-02
- Reported mileage
- 671,468 mi (2024)
Got a violation you want to contest?
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