Question To complete a Uniform Hazardous Waste Manifest, you must: Answers Sign the manifest by hand. Only sign the manifest if you cross into another state. Have a witness sign the manifest. Explanation If you are transporting hazardous waste, you must carry with you a Uniform Hazardous Waste Manifest. The manifest must be signed by hand. Take a FREE Practice Test Now This questions appears in the following tests: Arizona HazMat , Connecticut HazMat , Kentucky HazMat , Missouri HazMat , Oklahoma HazMat , South Dakota HazMat ,