Carrier profile · USDOT 3373523 · MC-1545842 · Updated Jun 13, 2026

Zum Services Inc

20 power unitsavg 5.2 yrRegional · 6 statesSAN FRANCISCO, CA88/100
CARRIER ACTIVEMC-1545842 ACTIVERATED SATISFACTORY
Verified linksridezum.comFMCSA SAFER

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 4.2%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 — 3,149 vehicle and 32 driver inspections over 24 months.

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

2.4% · latest 6-mo window● Steady

Share of vehicle-level roadside inspections in each trailing six-month window that resulted in a vehicle out-of-service order. Holding steady 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

3,100 inspections in the charted months · busiest month Jul '26 · 265

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.

Heavily inspected
Under-inspected
Expected
Well-monitored
Heavily inspected
≈78.8 / unit·yr
thin signalabundant signal
Among the more heavily-inspected carriers for its size — abundant roadside signal. Coverage isn't the question here; the out-of-service and crash record is.
Registered power units
20
Inspections · 24 mo
3,152
Annualized
≈1,576 / yr
Coverage
≈78.8 inspections / unit · yr

BASIC categories· CSA SMS · Aug 2026

Unsafe Driving
.01measure
SMS · per-BASIC
Hours-of-Service
0violations
official FMCSA
Driver Fitness
.05measure
SMS · per-BASIC
Controlled Substances
0violations
official FMCSA
1%
Vehicle Maintenance
official FMCSA

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.

  • 392.2 State/local traffic law violation (speeding, etc.)Unsafe Driving194 · 5 OOS
  • 393.83 Exhaust systemVehicle Maintenance120 · 111 OOS
  • 393.9 Inoperative required lampsVehicle Maintenance74 · 3 OOS
  • 396.3 Inspection / repair / maintenance not performedVehicle Maintenance69 · 6 OOS
  • 393.201 Parts & accessories (vehicle condition)Vehicle Maintenance66 · 1 OOS
  • 393.45 Brake tubing / hose defectsVehicle Maintenance34 · 4 OOS
  • 393.75 Tires (defective / underinflated / worn)Vehicle Maintenance30 · 28 OOS
  • 393.209 Parts & accessories (vehicle condition)Vehicle Maintenance14 · 2 OOS
  • 396.5 Oil and/or grease leakVehicle Maintenance12 · 2 OOS
  • 393.11 Required lamps/reflectors missingVehicle Maintenance10 · 1 OOS

ELD & hours-of-service

3 hours-of-service / ELD violations on record · most recent Jul 30, 2024. FMCSA does not publish the ELD device brand; these are the carrier's logging-compliance signals.

0ELD device issues
0No log / no ELD
0False logs
0Drove over hours

Crash history· 92 total · 60 in 24 mo

92
Total crashes
60
In last 24 mo
1
Fatal
44
Injury
YearCrashesFatalInjuryTow
20261701011
20253501931
2024200816
202310028
20225123
20214031
20061001
DateStateFatalitiesInjuriesTow-away
May 29, 2026WA00Yes
May 5, 2026WA00Yes
Apr 24, 2026MO01No
Apr 22, 2026CA01Yes
Apr 13, 2026MD01Yes
Apr 6, 2026MO00Yes
Apr 2, 2026MO01No
Mar 27, 2026WA00Yes
Mar 12, 2026MO01No
Mar 5, 2026MO01Yes
Feb 25, 2026MD00Yes
Feb 12, 2026CA00Yes
Feb 4, 2026MO00Yes
Jan 29, 2026CA01No
Jan 16, 2026MO02No
Jan 7, 2026CA01No
Jan 7, 2026NE01Yes
Dec 15, 2025CA01Yes
Dec 4, 2025MO03Yes
Nov 21, 2025MO04Yes
Nov 17, 2025MO02No
Nov 4, 2025CA00Yes
Oct 28, 2025MO02Yes
Oct 22, 2025VA00Yes
Oct 22, 2025MO00Yes