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Glossary > Automotive


What is Tampering?

Adjusting, negating, or removing pollution control equipment on a motor vehicle.

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What are Non-Road Emissions?

Pollutants emitted by combustion engines on farm and construction equipment, gasoline-powered lawn and garden equipment, and power boats and outboard motors.

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What is Methanol?

An alcohol that can be used as an alternative fuel or as a gasoline additive. It is less volatile than gasoline; when blended with gasoline it lowers the carbon monoxide emissions but...

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What are Onboard Controls?

Devices placed on vehicles to capture gasoline vapor during refueling and route it to the engines when the vehicle is starting so that it can be efficiently burned.

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What is Used Oil?

Spent motor oil from passenger cars and trucks collected at specified locations for recycling (not included in the category of municipal solid waste).

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What are Vehicle Miles Travelled (VMT)?

A measure of the extent of motor vehicle operation; the total number of vehicle miles travelled within a specific geographic area over a given period of time.

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What is Reformulated Gasoline?

Gasoline with a different composition from conventional gasoline (e.g., lower aromatics content) that cuts air pollutants.

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