Mariposa, CA
DOT 4477855MC 17680932 trucks1 drivers
Red: FMCSA RECORDS SHOW A PROBLEM
No Active Authority. Can't legally haul brokered freight across state lines right now.
Authority
No Active Authority
Can't legally haul brokered freight across state lines right now.
Insurance
No Liability Insurance On File
FMCSA has no liability insurance on file for this company.
Paperwork (MCS-150)
Paperwork Status: Up to Date
Last filed October 6, 2025. Next update due by May 2027.
Safety Rating
Not Checked
Not in this record. Run a live check for FMCSA's current rating.
| Coverage | On record with FMCSA |
|---|---|
| Liability (BIPD) required | $750,000 |
| Liability (BIPD) on file | Not on file |
| Cargo insurance | Not on file |
FMCSA insurance file as of May 14, 2026.
Insurer names and policy numbers appear here once our nightly copy has them. Run the live check for the current FMCSA filing.
From FMCSA's authority history (its current Motus system, plus the older L&I history it froze on May 14, 2026). "First granted" is the earliest grant on record; "on record since" is the earliest action FMCSA has when the grant itself is older than its electronic records. "Active since" is the latest grant or reinstatement, so a lapse that FMCSA reinstated restarts the clock.
From FMCSA's Safety Measurement System files, October 2024 to October 2026. Crash counts include crashes the carrier didn't cause. Out-of-service rates use only inspections that checked the driver or the vehicle.
Every roadside inspection in FMCSA's file for USDOT #4477855: when, where, and which vehicles (type, make, VIN) the inspector recorded.
THC compares FMCSA's files every night and keeps what changed. Tracked since October 30, 2026, last compared November 15, 2026.
No changes seen in the details THC tracks (status, name, phone, MC number, authority, insurance and bond filings) since October 30, 2026. That covers only what FMCSA's public files show.
Dates are when THC noticed the change in FMCSA's files, not when it happened, unless FMCSA's file gives the date. FMCSA's files can lag behind FMCSA's own systems. Check this record on FMCSA SAFER · Daily FMCSA change reports
The USDOT number is active, but FMCSA's records show no active for-hire carrier operating authority as of May 14, 2026. Without it the company can't haul brokered freight across state lines for hire.
FMCSA's authority history shows Sierra Tac Co LLC's common carrier authority is on record since November 14, 2025 (the original grant date isn't in FMCSA's electronic records).
Our daily record doesn't include Sierra Tac Co LLC's safety rating. Run a free live check to see FMCSA's current rating. Most carriers are "Not Rated", which is normal: it means FMCSA has never done a full audit.
FMCSA's safety data for October 2024 to October 2026 shows no roadside inspections and no reportable crashes for Sierra Tac Co LLC. That's common for new or small companies; it isn't a safety rating.
Yes, it looks up to date. FMCSA's records show it was last filed October 6, 2025. The next update is due by May 31, 2027.
No. FMCSA's records show no liability (BIPD) insurance on file for Sierra Tac Co LLC.
From public FMCSA records (the Company Census File, FMCSA's daily authority and insurance file and its monthly Safety Measurement System inspection and crash files). Trucking Help Center is not FMCSA and is not affiliated with this company. Records can change daily: run a live check, and confirm every load by calling the phone number on file. Is this your company and something looks wrong? Update your MCS-150 with FMCSA; our copy refreshes nightly.
Red: FMCSA RECORDS SHOW A PROBLEM
No Active Authority. Can't legally haul brokered freight across state lines right now.
Authority
No Active Authority
Can't legally haul brokered freight across state lines right now.
Insurance
No Liability Insurance On File
FMCSA has no liability insurance on file for this company.
Paperwork (MCS-150)
Paperwork Status: Up to Date
Last filed October 6, 2025. Next update due by May 2027.
Safety Rating
Not Checked
Not in this record. Run a live check for FMCSA's current rating.
