The present invention relates to a self-rescue apparatus for automobiles which is an auto creeper tread comprising a rectangular skid-proof pad 1 and a bar-shaped track 2 designed according to the width of an automobile wheel. A generalized approach for representing the context of each message layer and linking them to facilitate the encoding and decoding of message layers. The satellite transmits an acquisition signal at a first satellite polarization angle, and a jamming signal at a second satellite polarization angle different from the first satellite polarization angle. A spring loaded press plate pivotally mounted on the sidewall of the sleeve has a locking pin at one end which can extend into the through hole on the sleeve and the hole on the pole to lock the sleeve at a desired height along the pole. The determination module determines positional information for an input object located within a sensing region based on the first resulting signal and the second resulting signal.