When transporting cylinders containing used refrigerant dot requires the you?

When transporting cylinders containing used refrigerant, the Department of Transportation (DOT) requires that they be labeled with the appropriate hazard class and markings, including the proper shipping name and UN identification number. Cylinders must be securely packaged to prevent leaks and should be transported in an upright position in a well-ventilated area. Additionally, transporters must ensure compliance with all applicable regulations regarding the handling and disposal of hazardous materials.