emission test

Tailpipe pollution screening

An emission test measures the pollutants released by a vehicle's exhaust system to verify compliance with environmental standards.

Most jurisdictions require periodic emission testing for vehicle registration: My car failed its emission test and needs a new catalytic converter.

Also called a smog test or smog check in some regions.

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catalytic converter · converter · muffler · DMV · state inspection · inspection · sticker · fail · pass · idle · fumes · pollution · clean air · air quality · check · check engine light · engine · light

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type of vehicle inspection

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Evaluation ensuring no hazards

brake inspection · tire inspection · vehicle inspection

ENVIRONMENTAL REGULATION vs. DEREGULATION

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Deliberately excessive diesel emissions

deregulation · non-compliance · grandfathering

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