CLOSEUP OF A SIGN AT ONE OF SEVERAL SERVICE STATIONS THAT ADVERTISE TUNEUPS TO PASS EMISSION AND SAFETY TESTS. IT IS LOCATED NEAR AN AUTO EMISSION INSPECTION STATION IN DOWNTOWN CINCINNATI OHIO. ALL LIGHT DUTY, SPARK IGNITION POWERED MOTOR VEHICLES MUST BE INSPECTED FOR CARBON MONOXIDE AND HYDROCARBON EMISSIONS SINCE JANUARY, 1975, AND ALSO RECEIVE A SAFETY CHECK. ALL OTHER TYPE VEHICLES REGISTERED IN THE CITY MUST UNDERGO ONLY THE SAFETY CHECK

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