Commercial auto insurance - also called business auto insurance - covers vehicles used in the course of business operations. It pays for bodily injury and property damage caused by accidents involving business vehicles, whether those vehicles are owned by the company, leased, hired (rented), or driven by employees using their personal vehicles for business purposes.
Commercial auto insurance covers vehicles used in business operations - paying for bodily injury and property damage from accidents involving owned, leased, hired, or employee-driven personal vehicles used for business purposes.
When a vendor, contractor, or service provider uses vehicles to perform work on your behalf or at your location, your contract should require commercial auto coverage. Understanding what coverage is needed, what the policy terms mean, and how to verify compliance on a certificate of insurance is an important part of any third-party risk program.
What Commercial Auto Insurance Covers
A commercial auto policy covers:
Liability - third-party bodily injury and property damage claims arising from vehicle accidents
Physical damage - damage to the insured's own vehicles (collision and comprehensive)
Medical payments / personal injury protection - covers medical expenses for the driver and passengers
Uninsured/underinsured motorist - protects the insured when at fault party has no or insufficient insurance
For contract compliance purposes, the liability section is almost always what is specified and verified.
The "Symbol" System: Who and What Is Covered
Commercial auto policies use a symbol system - single-digit codes - to define which vehicles are covered. This appears on the policy declarations and on the ACORD 25 form. The symbols matter for compliance:
- Symbol 1 - Any Auto: The broadest coverage, encompassing owned, hired, non-owned, and any other vehicle used in the business. Most contracts prefer or require this symbol.
- Symbol 2 - Owned Autos Only: Covers only vehicles the named insured owns. Does not cover hired or non-owned vehicles.
- Symbol 8 - Hired Autos Only: Covers rented or leased vehicles only.
- Symbol 9 - Non-Owned Autos Only: Covers vehicles not owned by the company, including employee personal vehicles used for business.
A company without a fleet of company-owned vehicles may still need commercial auto coverage if employees use their personal vehicles for business purposes or if vehicles are rented for projects. Symbol 9 (non-owned) or a combination of Symbols 8 and 9 is typically required in these situations.
Hired and Non-Owned Auto: A Critical Coverage Gap
Many service businesses - consultants, staffing firms, technology vendors - do not own vehicles but send employees to client sites in personal cars or rental vehicles. They need hired and non-owned auto (HNOA) coverage.
Hired auto covers vehicles the business leases, rents, or borrows. Non-owned auto covers vehicles employees own personally but use for business purposes.
Without HNOA, if an employee is involved in an accident driving their own car on company business, the liability falls to the employee's personal auto policy - which typically has a business use exclusion - or to the company directly, with no insurance backstop.
Many contracts require commercial auto with "any auto" symbol or specifically require HNOA. When a vendor does not own vehicles but your contract includes a commercial auto requirement, HNOA is the appropriate compliance mechanism.
Reading Commercial Auto on a COI
On the ACORD 25, commercial auto appears in its own section. Key fields:
- Coverage symbols - what types of vehicles are covered (Symbol 1 is broadest)
- Policy effective and expiration dates
- Combined single limit (CSL) - a single limit applying to both bodily injury and property damage; most contracts specify this form (common requirement: $1,000,000 CSL)
- Split limits - some older policies state bodily injury per person, bodily injury per accident, and property damage separately; confirm these meet contractual equivalents
- Additional insured status - if required by your contract
- Waiver of subrogation - if required by your contract
Common Compliance Issues
Symbol 2 (owned only) when contract requires any auto. A company submits a COI showing owned auto coverage, but employees regularly use personal vehicles for client work. Non-owned auto is missing.
Limits below contract requirements. A $500,000 CSL policy submitted against a contract requiring $1,000,000 CSL fails the requirement.
Commercial auto entirely absent for vehicle-intensive operations. A contractor providing delivery or transportation services submits a COI with no commercial auto line at all.
No additional insured or waiver on the auto line. Contract requires both on all lines; the COI notes them only on general liability.
Personal auto policy submitted. Some vendors mistakenly believe their personal auto policy covers business use. Personal auto policies typically exclude business use. Only a commercial auto policy satisfies a commercial auto contractual requirement.
How Bramble Helps
Bramble extracts commercial auto requirements - coverage symbols, limit minimums, additional insured and waiver requirements - from your contracts and compares them against submitted COIs, flagging symbol mismatches, limit shortfalls, and missing endorsements on the auto line.
Visit getbramble.com to see how Bramble handles full contract-vs-COI compliance including commercial auto.