Close-up of an exhaust analyzer used at an auto emission inspection station in downtown Cincinnati, Ohio
9/1975
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Close-up of an exhaust analyzer used at an auto emission inspection station in downtown Cincinnati, Ohio. A hose from the car’s tailpipe runs to the machine which registers carbon monoxide and hydrocarbon emissions. Exhaust emission tests were started on an annual basis in January, 1975, for all light duty, spark ignition powered motor vehicles. All vehicles registered in the city undergo annual safety checks.
This primary source comes from the Records of the Environmental Protection Agency.
National Archives Identifier:
557890Full Citation: Close-up of an exhaust analyzer used at an auto emission inspection station in downtown Cincinnati, Ohio; 9/1975; Records of the Environmental Protection Agency, Record Group 412. [Online Version, https://www.docsteach.org/documents/document/closeup-of-an-exhaust-analyzer-used-at-an-auto-emission-inspection-station-in-downtown-cincinnati-ohio, May 12, 2024]