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SIERRA BROTHERS TRANSPORT LLC

DOT# 4304790 MC# 1677046CARRIER
ACTIVE

Trust Score

79 / 100
C Fair

Components

Compliance · 40% 95
Safety · 35% 55
Insurance · 25% 85
Vehicle OOS rate is 2.2× the national average Driver OOS rate is 4.9× the national average No active cargo insurance on file
Confidence: high · based on FMCSA safety, insurance & authority data How is this calculated?

Overview

Contact

Phone: (786) 366-1521

Cell: (786) 366-1521

Email: SIERRABROTHERS24@GMAIL.COM

Company Officers

YOSVANY SIERRA AGUILAR

Business Info

Fleet

2

Power Units

2

Drivers

Equipment Breakdown

Owned Trucks1
Owned Tractors1

Authority

Status: ACTIVE

FMCSA add date: Oct 3, 2024

Common authority: Jan 8, 2025

Authority History (1)

Authority TypeActionDate
MOTOR PROPERTY COMMON CARRIERGRANTEDJan 8, 2025

Cargo Types

General Freight

Active Certifications

Property

MCS-150

Last updated: Jan 12, 2026

Mileage: 117,230 (2025)

Operation Classification

AUTHORIZED FOR HIRE

Carrier Operation

Interstate

Recent Changes

Safetydriver oos rate: 30 → 36.363636Aug 27, 2026
Safetydriver oos rate: 36.363636 → 30Aug 26, 2026
Safetydriver oos rate: 33.333332 → 40Aug 2, 2026
Contactemail: → SIERRABROTHERS24@GMAIL.COMJun 23, 2026
Identitycompany officer 1: → YOSVANY SIERRA AGUILARJun 23, 2026

Safety

Out-of-Service Rates

Driver13 inspections
30.8%
6.2%
Carrier National avg
Vehicle8 inspections
50.0%
22.8%
Carrier National avg
Hazmat

No hazmat inspections

Overall13 inspections
53.8%
Carrier

Crash Summary

0

Fatal

0

Injury

0

Towaway

0

Total

BASIC Violations

Unsafe Driving2
Driver Fitness2
Hours of Service25
Drug / Alcohol0
Vehicle Maintenance12

Safety Measurement System (SMS)

FMCSA's official per-BASIC roadside-performance measures over the trailing 24 months, computed from the 10 inspections below. A measure of 0 means no recorded violations in that BASIC — not necessarily a strong safety record on a small sample. FMCSA does not publish peer-group percentiles for property carriers, so the underlying measures — not percentile rankings — are shown; Hazmat Compliance and Crash Indicator are not published. Based on fewer than 11 inspections — treat these measures as a weak signal.

SMS Inspections (24 mo)

10

Total

4

Driver OOS

2

Vehicle OOS

BASIC Measures

Unsafe Driving1.791 insp w/ viol
Hours of Service5.667 insp w/ viol
Driver Fitness1.162 insp w/ viol
Controlled Substances0.000 insp w/ viol
Vehicle Maintenance3.083 insp w/ viol

Insurance

$750,000

BIPD Coverage

Cargo Coverage

1 policy on file1 active
TypeStatusInsurerPolicy #CoverageEffectiveExpiresForm
BIPD Active HIGHLANDER SPECIALTY INSURANCE COMPANYDC920001343-00$750,000Jan 2, 202691X

Insurance History (1)

TypeInsurerStatusCoverageEffectiveCancelled
BIPD · F91XPROGRESSIVE COUNTY MUTUALReplacedTERM/REPL$750,000Jan 2, 2025Jan 2, 2026

Get this data via API

API Reference
curl https://api.dotlookup.dev/v1/carriers/4304790