Children, the elderly, and people with asthma or emphysema are especially sensitive to it . So are people who work or play outside. Maybe you're not one of those people. But that only means you can breathe more ground-level ozone before it begins to affect you, too. The safety and emissions test.
Motor vehicles generate fumes called oxides of nitrogen, key ingredients to ground-level ozone.
For the first time in Rhode Island, the Emissions and Safety Test can measure oxides of nitrogen, and other harmful emissions , such as hydrocarbons and carbon monoxide. The test is more accurate. Your car is tested on a dynamometer, which acts like a treadmill that can simulate real-world driving conditions. Emissions are measured at the tailpipe for each specific pollutant, including oxides of nitrogen. The test is also fairer.