Supplement 1 to the 02 series of amendments modified the definition of “interior compartment” (previously “passenger compartment”) in paragraph 2.2. The definition replaced the term “roof” by “ceiling” in reference to the upper boundary surface of the compartment definition. Nonetheless, use of the term “roof” was not updated throughout the regulation. This proposal corrects the omission by substituting “ceiling” for “roof” throughout the text.