Chapter 6. CDL Endorsements - HazMat Hazardous Materials Endorsement Due to the federal Patriot Act, the rules for obtaining a Hazardous Materials (HazMat) Endorsement have changed as follows: 1. Massachusetts CLPs will no longer be issued with a Hazardous Materials Endorsement 2. A Commercial License with a Hazardous Materials Endorsement cannot be issued, renewed, or transferred until the Transportation Security Administration (TSA) notifies the RMV that the applicant has passed a Background Check. Applying for or Adding a Hazardous Materials Endorsement The RMV recommends that you do not apply for a Hazardous Materials Endorsement until you have already obtained a Commercial Driver's License. 1. Go to the RMV Service Center and do the following: * Complete a CDL Application * Pay applicable fees * Take the Hazardous Materials Knowledge Exam If you pass the Hazardous Materials Knowledge Exam, you will receive as Hazardous Materials Pass Certificate. Exam results are valid for two (2) years. 11/13