QUESTION TYPE: Weaken
CONCLUSION: Emissions standards testing is effective.
REASONING: Cars are tested while idling. Pollutants exiting the tailpipe are measured.
ANALYSIS: People don’t just sit idle in their cars all day. They generally drive them around.
Exhaust pollutants might change when the car moves. If so, the testing is not a good measure of how cars pollute.
- This shows that emissions control becomes expensive but it doesn’t really have anything to do with emissions testing.
- As long as the devices are recalibrated frequently then the testing should go smoothly.
- CORRECT. Yikes. So by making a car clean while idling we are actually causing more pollution when the car moves.
- This doesn’t tell us whether the emissions standards are effective.
- This shows the standards are strong because they don’t make exceptions for old cars. But…are the emissions tests effective? That’s the question.
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