Sources: census record as of October 19, 2026; authority and insurance from FMCSA L&I, checked October 4, 2026; inspections and crashes from FMCSA SMS, checked October 4, 2026.
Quick answer
Rock N P Services LLC is an intrastate (non-hazmat) motor carrier in Knox City, Texas (USDOT 4536057) and a self-reported fleet of 2 power units.
Key takeaways
USDOT 4536057 is registered to Rock N P Services LLC, an intrastate (non-hazmat) carrier based in Knox City, TX.
MC docket number on file: MC-1799345.
Current authority, insurance and safety status should be confirmed on the official FMCSA SAFER snapshot.
Self-reported fleet size: 2 power units and 1 driver (FMCSA MCS-150 self-report; sanitized for plausibility).
Registered cargo types include general freight, grain, feed, hay.
1 of 1Vehicle inspections with an out-of-service orderToo few inspections for a meaningful rate
1 of 1Driver inspections with an out-of-service orderToo few inspections for a meaningful rate
Source: FMCSA Safety Measurement System, roadside inspections and crashes over a ~24-month window, checked October 4, 2026. An out-of-service rate is the share of inspections in which a vehicle or driver was placed out of service. With few inspections, one result moves the rate a lot. FMCSA crash records include crashes regardless of fault. None of these figures is a safety rating. The official Satisfactory/Conditional/Unsatisfactory safety rating is issued separately. See SAFER.
About Rock N P Services LLC
Rock N P Services LLC is an intrastate (non-hazmat) motor carrier based in Knox City, Texas, registered with the FMCSA under USDOT 4536057. Its current operating authority and insurance should be confirmed on the official SAFER record. The carrier self-reports a fleet of 2 power units and 1 driver. Registered cargo includes general freight, grain, feed, hay. Its most recent MCS-150 filing reported 1 mi (2025).
Before you work with this carrier
Confirm the safety rating. Authority and insurance are shown or linked above. Open the SAFER snapshot for the official safety rating and out-of-service status.
Verify insurance is current. Coverage on file can lapse; confirm active BIPD/cargo before tendering a load.
Match authority to the work. For-hire loads need active operating authority. A USDOT number alone isn't enough.