180 / | HD | MOTOR VEHICLES |
271 | DF | WITH MEANS FOR PROMOTING SAFETY OF VEHICLE, ITS OCCUPANT OR LOAD, OR AN EXTERNAL OBJECT {7} |
274 | DF | .~ Responsive to engagement of portion of perimeter of vehicle with external object {3} |
279 | .~.~ And causing interruption of an electrical system of the vehicle or its motor |