CFR > Title 49 - Transportation > SUBTITLE B—Other Regulations Relating to Transportation > CHAPTER I—PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (Parts 105–199) > SUBCHAPTER D—PIPELINE SAFETY (Parts 186–199) > PART 199—DRUG AND ALCOHOL TESTING > SUBPART C—Alcohol Misuse Prevention Program (§199.200 to §199.245) > 199.235—Required evaluation and testing.