Abstract: An air filter is provided for use with an internal combustion engine including an air intake conduit. The air filter includes a top, a bottom, and filter media extending between the top and the base of the bottom to filter incoming air. The top is closed to prevent air flow therethrough. The bottom includes an annular base having an inner perimeter and an outer perimeter spaced apart from and surrounding the inner perimeter, an opening defined by the inner perimeter to deliver filtered air to the air intake conduit, a first tab portion extending outward away from the base, and a second tab portion extending outward away from the base.

Abstract: System and method for enhanced 9-1-1 address development, maintenance and call routing using road access zones (RAZs). RAZs are geographic areas accessible by a particular road. RAZs are formed from geographic data in vector form which includes a plurality of road names, address numbers, and road center lines. The steps for forming the RAZ include: first assigning a number to each road name, then creating a roadname route system based on the plurality of road names and the address numbers, then creating a plurality of polygons, wherein each polygon is associated with a different road name number, and then overlaying the road center lines with the polygons so as to define a left side and a right side of each road center line. RAZs efficiently provide for the verification, maintenance and determination of road names, address parity, geo-coding and emergency service zones (ESZ).