Solid-state breath alcohol vehicle interlock system. Paper presented at the International Automotive Engineering Congress, Detroit, Michigan, January 8-12, 1973.

Most modern breath alcohol analyzers are based on wet chemical colorimetry techniques. This paper describes work based on solid state sensor technology, which accepts aveolar breath samples only. A device that prevents legally intoxicated persons from interlocking the ignition system and operating a motor vehicle when e breath alcohol level exceeds the present level is described.