Coverage description
An Insurance Services Office (ISO) standard form. It covers your legal liability for loss to customers' autos and their equipment while in your care during towing operations, under comprehensive, specified causes of loss or collision coverage, subject to the limits and deductibles in the schedule.
How the form has changed
4 changes across 1 revision, newest first. Each edition is compared with the one before it, using wording from filed copies.
09 27 edition
Sep 2027, compared with 11 20Latest editionThe equipment exclusion now applies to any sound-reproducing equipment that is not permanently installed, not just tape decks.
11 20
“Tape decks or other sound-reproducing equipment”
09 27
“Sound-reproducing equipment unless permanently installed”
Tapes and records are replaced in the exclusions by portable non-original manufacturer recording or storage media such as discs, drives and memory cards.
11 20
“Tapes, records or other sound-reproducing devices”
09 27
“Portable non-original manufacturer recording or storage media”
Loss is now defined as direct and accidental physical loss or damage.
11 20
“"Loss" means direct and accidental loss or damage”
09 27
“"Loss" means direct and accidental physical loss or damage”
A definition of executive officer is added for the who is an insured provision.
11 20
Not in this edition
09 27
“"Executive officer" means a person holding any of the officer positions”
Editions
Edition dates as filed, newest first. Filing counts include every state submission that lists the edition.
| Edition | Filings | Companies | States | Filed |
|---|---|---|---|---|
| 09 27Sep 2027Latest | 27 | 1 | 27 | Aug 2026 to Sep 2026 |
| 11 20Nov 2020 | 159 | 115 | 15 | Nov 2021 to Sep 2026 |
What the filings show
- Edition in use: in the past 12 months, 38 companies filed the 11 20 edition.
- The latest edition, 09 27, has been filed by Insurance Services Office, Inc in 27 states since Aug 20, 2026. No carrier filings list it yet.
- CA 00 01 (Business Auto Coverage Form) is filed alongside it most often, in 177 of the same filings (95%).
Filed under
Data from admitted P&C filings with state insurance departments, submitted Oct 2021 to Sep 2026, excluding withdrawn and rejected filings. One filing can cover several affiliated companies.
Carriers filing this form
The 10 carrier groups with the most filings that include CA 04 52, out of 51 in total.
| Carrier | Filings | States | Editions, most filed first | Last filed |
|---|---|---|---|---|
| Insurance Services Office, Inc.Advisory Organization | 28 | 28 | 09 2711 20 | Sep 17, 2026 |
| Nationwide Corporation Group11 group companies filed it, led by Nationwide Agribusiness Insurance Company and Allied Insurance Company of America | 17 | 6 | 11 20 | Sep 22, 2025 |
| Arch Insurance Group3 group companies filed it, led by Arch Insurance Company and Arch Indemnity Insurance Company | 13 | 2 | 11 20 | Apr 8, 2026 |
| OLD Republic Group4 group companies filed it, led by BITCO General Insurance Corporation and BITCO National Insurance Company | 13 | 1 | 11 20 | May 11, 2026 |
| Scor GroupGeneral Security National Insurance Company | 10 | 1 | 11 20 | Jun 9, 2026 |
| Clear Blue Financial Group2 group companies filed it, led by Clear Blue Insurance Company and Rock Ridge Insurance Company | 8 | 2 | 11 20 | Oct 29, 2025 |
| Tokio Marine Holdings Incorporated Group2 group companies filed it, led by Safety National Casualty Corporation and Philadelphia Indemnity Insurance Company | 7 | 3 | 11 20 | Aug 27, 2026 |
| Liberty Mutual Group6 group companies filed it, led by Employers Insurance Company of Wausau and LM Insurance Corporation | 6 | 4 | 11 20 | Jul 1, 2026 |
| United Fire & CAS Group2 group companies filed it, led by United Fire and Casualty Company and Addison Insurance Company | 6 | 2 | 11 20 | Jun 19, 2026 |
| Markel Corporation Group2 group companies filed it, led by State National Insurance Company, Inc. and National Specialty Insurance Company | 5 | 4 | 11 20 | Jun 24, 2024 |
How the largest insurers handle CA 04 52
Groups among the largest commercial auto insurers that filed CA 04 52 or their own version in the past five years.
- Berkshire Hathaway GroupUses CA 04 52 in 1 filing
- Liberty Mutual GroupUses CA 04 52 in 4 filings
See more forms
Search related forms, compare editions, and research carrier filings with FilingFocus.
States
Number of filings that include CA 04 52 in each state, Oct 2021 to Sep 2026. Darker states have more filings.
Often filed with
Standard-style form numbers that appear in the same filings most often.
- CA 00 01Business Auto Coverage Form177 filings
- CA 04 39Volunteer Hired Autos176 filings
- CA 04 41Replacement Cost Coverage – Private Passenger Types171 filings
- CA 20 33Autos Leased, Hired, Rented or Borrowed with Drivers - Physical Damage Coverage168 filings
- CA 99 05Business Interruption Coverage167 filings
- CA 00 25Auto Dealers Coverage Form166 filings
- CA 23 30Motor Carrier Endorsement164 filings
- CA 00 20Motor Carrier Coverage Form162 filings
- CA 27 15Amendment of Personal and Advertising Injury Definition - General Liability Coverages161 filings
- CA 23 45Public or Livery Passenger Conveyance and on- Demand Delivery Services Exclusion153 filings
Recent filings
Latest filings that include this form number. Filed copies open in FilingFocus.
| Submitted | Company | State | Editions | Tracking number |
|---|---|---|---|---|
| Sep 17, 2026 | Insurance Services Office, Inc. | CA | 09 27 | ISOF-135093307 |
| Sep 10, 2026 | SECURA Insurance, A Mutual Companyand 1 more | IL | 11 20 | SEIC-135044227 |
| Aug 28, 2026 | Jet Insurance Company | SC | 11 20 | MRTN-134878222 |
| Aug 27, 2026 | Philadelphia Indemnity Insurance Company | NM | 11 20 | PHLX-135063316 |
| Aug 26, 2026 | Insurance Services Office, Inc. | LA | 09 27 | ISOF-135053020 |
| Aug 26, 2026 | Insurance Services Office, Inc. | TX | 09 27 | ISOF-135053045 |
| Aug 25, 2026 | Insurance Services Office, Inc. | OK | 09 27 | ISOF-135053037 |
| Aug 21, 2026 | Insurance Services Office, Inc. | AR | 09 27 | ISOF-135052987 |
| Aug 21, 2026 | Insurance Services Office, Inc. | MS | 09 27 | ISOF-135053025 |
| Aug 21, 2026 | Insurance Services Office, Inc. | NJ | 09 27 | ISOF-135053031 |
| Aug 21, 2026 | Insurance Services Office, Inc. | ND | 09 27 | ISOF-135053035 |
| Aug 21, 2026 | Insurance Services Office, Inc. | VT | 09 27 | ISOF-135053047 |
Most filed ISO CA forms
- CA DS 03 Business Auto Declarations
- CA DS 21 Motor Carrier Declarations
- CA 00 01 Business Auto Coverage Form
- CA 28 03 Abuse Or Molestation Exclusion For Covered Autos Liability Exposure
- CA 23 17 Truckers - Uniform Intermodal Interchange Endorsement Form UIIE - 1
- CA 04 43 Waiver Of Transfer Of Rights Of Recovery Against Others To Us (Waiver Of Subrogation) - Automatic When Required By Written Contract Or Agreement
- CA 04 44 Waiver Of Transfer Of Rights Of Recovery Against Others To Us (Waiver Of Subrogation)
- CA 04 49 Primary and Noncontributory - Other Insurance Condition
- CA 20 01 Lessor - Additional Insured And Loss Payee
- CA 20 48 Designated Insured For Covered Autos Liability Coverage
- CA 00 20 Motor Carrier Coverage Form
- CA 20 71 Auto Loan/Lease Gap Coverage
See more carrier forms
Search forms by carrier, line of business, state, and wording with FilingFocus.