What is MC number 1491990?

MC number 1491990 is assigned to Sierra Mountain Transport Inc, a registered motor carrier with the FMCSA under USDOT number 3983150.

Is Sierra Mountain Transport Inc Safe? DOT 3983150 – Safety Rating, Crashes & Violations

Q: How many inspections has Sierra Mountain Transport Inc had?

Sierra Mountain Transport Inc has recorded 141 total inspections, with 28 out-of-service orders.

This carrier is active. Review the inspection and crash data below.

Sierra Mountain Transport Inc is a registered motor carrier with the FMCSA under USDOT number 3983150. The company operates from Jacksonville, FL and maintains an active operating status with 132 power units and 120 drivers on record.

Safety Rating

FMCSA Safety Rating

— Not Rated

No formal safety rating has been assigned to Sierra Mountain Transport Inc by the FMCSA. View official FMCSA record →

Inspection Summary

All-time Inspections

All-time

141

Total

OOS

Driver OOS

Vehicle OOS

141 inspections indicates a high-volume, actively operating carrier.

OOS Rate19.86%

The out-of-service (OOS) rate represents the percentage of inspections that resulted in the carrier being placed out of service. 19.9% — approaching the national vehicle OOS average of ~21%.

Crash History

Crash Records

All-time

Total

Fatal

Injuries

Tow-Away

8 crashes on record. This is within a common range for active carriers — assess relative to fleet size and inspection volume.

BASICS Safety Scores

BASICS Scores

Higher = more risk · FMCSA Behavior Analysis and Safety Improvement Categories

0.7

Unsafe Driving

Measures violations related to speeding, reckless driving, and improper lane changes.

0.1

HOS Compliance

Tracks hours-of-service violations, including driving beyond legal limits without rest.

0.0

Driver Fitness

Reflects issues with driver qualifications, licenses, and medical certifications.

0.0

Controlled Substances

Captures drug and alcohol violations, including failed or refused tests.

5.4

Vehicle Maintenance

Reflects brake, tire, lighting, and other equipment-related inspection violations.

Scores above 65 (general freight) or 50 (passenger/hazmat) trigger an FMCSA Alert. Higher scores indicate more safety risk. National median is approximately 20–30 for active carriers.

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Carrier Insight

Sierra Mountain Transport Inc is a large motor carrier operating in Florida. With 141 total inspections on record, the carrier has an out-of-service rate of 19.9%, which is below the national average of approximately 21%. 8 crashes have been reported. Review crash details alongside fleet size and inspection history before making hiring decisions.

Sierra Mountain Transport Inc has not received a formal safety rating from the FMCSA. This is common for smaller or newer carriers and does not necessarily indicate a safety problem.

The company operates 132 power units and employs 120 drivers. This fleet size places it among the larger carriers in the FMCSA registry.

Frequently Asked Questions

What is USDOT Number 3983150?

USDOT number 3983150 is assigned to Sierra Mountain Transport Inc, an active motor carrier registered with the FMCSA, based in Jacksonville, FL.

How many inspections has Sierra Mountain Transport Inc had?

Sierra Mountain Transport Inc has recorded 141 total inspections with 28 out-of-service orders, representing an OOS rate of 19.86%.

Where is Sierra Mountain Transport Inc located?

Sierra Mountain Transport Inc is headquartered at 12276 San Jose Blvd Suite 426, Jacksonville, FL 32223.

What does "Not Rated" mean?

"Not Rated" means the FMCSA has not conducted a formal compliance review for this carrier. It does not indicate a safety problem — many active carriers operate without a formal rating.

Is zero crashes always a good sign?

Generally yes, but context matters. A carrier with zero crashes and very few inspections may simply have limited road exposure. Always review crash data alongside inspection volume and fleet size.

What is a normal OOS rate?

The national average vehicle out-of-service rate is approximately 21%. Driver OOS averages around 5%. Rates significantly above these thresholds may indicate recurring compliance issues.

How often is FMCSA data updated?

FMCSA publishes updated carrier data monthly. This page reflects the most recent available snapshot, updated on the date shown above.

What is the MC number for Sierra Mountain Transport Inc?

The MC number for Sierra Mountain Transport Inc is MC# 1491990. The MC number is issued by the FMCSA and authorizes carriers to operate in interstate commerce.

Data sourced from the FMCSA Open Data Portal. Updated monthly. DOT# 3983150 · Last updated: 2026-03-09. View official FMCSA record →

Sierra Mountain Transport Inc (DOT# 3983150 · MC# 1491990) – FMCSA Carrier Profile