Commonwealth Automobile Reinsurers

Rules of Operation


CAR Rules 21-40

CAR Rules 21 through 40 establish the policies and procedures by which Members, Assigned Risk Companies (ARCs) and Assigned Risk Producers (ARPs) are governed with regard to the operation of, and participation in, the Massachusetts Automobile Insurance Plan (MAIP).

Prior year versions of the Rules are available beginning with the July 16, 2007 Rules promulgated by the Commissioner of Insurance, through the current set of Rules. Also available is a summary of specific Rule amendments approved during each calendar year including a brief description and approval date of the Rule modification and the CAR Bulletin(s) in which the approval was announced.

DISCLAIMER:  These compilations and summaries are prepared for informational purposes only and are not intended to replace the official versions of CAR Rules 21 through 40.  CAR provides this information as a reference tool for the industry and the public, and while CAR endeavors to keep the information accurate to the best of its ability, CAR makes no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability or availability with respect to this information for any purpose.  Any reliance on such information is strictly at your own risk.  The interpretation of the CAR Rules may be affected by court decisions, regulations promulgated by the Commissioner of Insurance or bulletins issued by the Division of Insurance.  Please seek legal counsel for assistance with the interpretation or application of individual Rules.

Current Rules

Prior Year Rules (as of the 1st of the Year)

  2023 Rules    2022 Rules    2021 Rules    2020 Rules    2019 Rules    2018 Rules    2017 Rules    2016 Rules
  2015 Rules    2014 Rules    2013 Rules    2012 Rules    2011 Rules    2010 Rules    2009 Rules    2008 Rules

  July 16, 2007 Rules - promulgated by the Commissioner of Insurance

The Decision on Competition contains information relative to the establishment of competitive rating and the development of the MAIP.

CAR Rules 1-20

CAR Rules 1 through 20 establish the policies and procedures by which Servicing Carriers, Members and producers are governed with regard to the operation of, and participation in, the Commonwealth Automobile Reinsurers.