| 280 / | HD | LAND VEHICLES |
| 29 | DF | WHEELED {21} |
| 727 | DF | .~ Attachment {22} |
| 728.1 | DF | .~.~ Inflatable passenger restraint or confinement (e.g., air bag) or attachment {12} |
| 734 | DF | .~.~.~ Responsive to vehicle condition {1} |
| 735 | ![]() | .~.~.~.~ Electric control and/or sensor means |