MCS-90 Endorsement Requirements: What Motor Carriers and Insurers Must Know (2026)
Quick Answer
The MCS-90 is an endorsement added to a motor carrier\'s primary liability insurance policy by the insurer, as required by 49 CFR Part 387. It is a federal surety mechanism that guarantees the public will be compensated for bodily injury, property damage, or environmental restoration caused by a carrier\'s CMV — even if the primary insurance policy has exclusions or disputes that would otherwise allow the insurer to deny the claim.
This comprehensive guide covers everything you need to know about mcs-90 endorsement requirements: what motor carriers and insurers must know (2026). Whether you're a safety manager, compliance officer, or operations director, understanding dot compliance requirements is critical to avoiding costly fines and failed audits.
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