BIG SKY BUS LINES INC
AUTHORIZEDUSDOT
1027249
MC Number
431682
Fleet Size
77
Total Drivers
59
Last updated: March 24, 2026
Safety overview
BIG SKY BUS LINES INC is a mid-size interstate motor carrier based in BLACK EAGLE, Montana, operating 77 power units with 59 drivers. All 5 BASIC scores sit well below FMCSA intervention thresholds, which is a good sign for anyone vetting this carrier. They have 2 crashes on file. FMCSA records show 5 inspections for this carrier.
BASIC scores
SMS PercentilesHigher percentile = worse performance relative to peers. Scores at or above 75% may trigger an FMCSA investigation.
Out-of-service rates vs. national average
An out-of-service order means the driver or vehicle was pulled from operation during a roadside inspection.
For reference, the average driver OOS rate in Montana is 9.7% and the average vehicle OOS rate is 32.2% across 8,607 carriers.
Company details
- Entity Type
- N/A
- Carrier Operation
- Interstate
- Operation Classification
- Authorized For Hire
- Cargo Carried
- N
- Hazmat
- No
- Safety Rating Date
- N/A
What are BASIC scores?
FMCSA tracks carrier performance through its Safety Measurement System (SMS), which scores carriers across six categories called BASICs. Each score is a percentile from 0 to 100, based on inspection and crash data from the past 24 months.
A score of 65 means the carrier performed worse than 65% of its peers. Anything above 75% can trigger FMCSA alerts or investigations. Brokers vetting new carriers should pay attention to scores above 50%.
- Unsafe driving
- Speeding, reckless driving, improper lane changes, seatbelt violations. All based on what officers find during roadside inspections.
- HOS / Fatigue
- Hours-of-service violations, logbook problems, driving past the allowed limits. Fatigued driving is one of the top causes of truck crashes in the US.
- Driver fitness
- Licensing problems, expired medical certificates, and other driver qualification issues.
- Controlled substances
- Drug and alcohol testing violations, possession, or impairment.
- Vehicle maintenance
- Brake problems, tire issues, lighting defects, load securement failures. Caught during the vehicle portion of roadside inspections.
- Crash indicator
- Based on crash history from state-reported data. Higher percentile means more crashes relative to the carrier's size and mileage.
Inspections
5
Total
0%
Driver %
Insurance on file
Liability (BIPD)
NEW YORK MARINE & GENERAL INS. CO. — eff. Jul 1, 2025
Cargo
Not on file
Surety Bond
Not on file
Trust Fund
Not on file
Crash history
2
Total Crashes
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Frequently asked questions
Is BIG SKY BUS LINES INC authorized to operate?
Yes. BIG SKY BUS LINES INC (USDOT #1027249) currently holds "AUTHORIZED" status with FMCSA. They're registered as an interstate carrier.
What is BIG SKY BUS LINES INC's safety record?
Based on FMCSA data, BIG SKY BUS LINES INC has no BASIC scores above the 75th percentile intervention threshold. They haven't received a formal FMCSA safety rating. 2 crashes on record.
How many trucks does BIG SKY BUS LINES INC operate?
BIG SKY BUS LINES INC operates 77 power units with 59 drivers on file. That puts them in the mid-size range.
Does BIG SKY BUS LINES INC transport hazardous materials?
No. BIG SKY BUS LINES INC does not have a hazardous materials flag in the FMCSA database.
Where is BIG SKY BUS LINES INC located?
BIG SKY BUS LINES INC is based in BLACK EAGLE, Montana at 2920 15TH STREET NE, 59414. Phone: (406) 454-1283.
What are BIG SKY BUS LINES INC's out-of-service rates?
Their vehicle out-of-service rate is 0.0% (national average: 20.72%). Below average, suggesting the fleet is well-maintained.