If you require a hazardous materials endorsement, you will be required to: Question If you require a hazardous materials endorsement, you will be required to: Answers Submit your fingerprints. Submit your fingerprints and will be subject to a background check. Submit your fingerprints, but only if you have had a traffic violation within the previous three years. Submit to a background check, but only if you have had a traffic violation within the previous three years. Explanation To obtain a hazardous materials endorsement, you will be required to submit your fingerprints and will be subject to a background check. This questions appears in the following tests: Texas Class A Knowledge Test