Kelias 95LEARNING SPACE
FREIGHT TRANSPORT

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Initial professional qualificationLithuania / EU · C / CE
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QUESTION 084Not studied yet

Which main groups of exhaust pollutants are limited by Euro standards?

EUCompared with sources

Answer

The main groups of regulated pollutants are carbon monoxide CO, hydrocarbons HC, nitrogen oxides NOx and particulate matter PM. The limits depend on the standard and vehicle category.

Please note

HC denotes hydrocarbons. Euro 6 requirements for light-duty vehicles and Euro VI requirements for heavy-duty vehicles are not one and the same table.

A simple explanation

Euro emission standards limit pollutants such as carbon monoxide, hydrocarbons, nitrogen oxides and particulate matter. Their limits and test methods depend on the vehicle category and the stage of the standard. Euro 6 for passenger cars and Euro VI for heavy-duty vehicles must not be treated as the same table.

REMEMBER

CO, HC, NOx, PM — the main groups.

Sources and checks

Editorial review: 2026-09-27.

Learning objective: Recognise the main pollutant groups limited by Euro standards and the distinction between vehicle categories. EU syllabus area: 1.3. The pollutant groups have been checked; no limit values or effective dates for specific Euro stages are given.

Answer compared with sources: 2026-09-27.

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Translated from the Lithuanian edition. The material concerns Lithuania and the EU; source-check dates refer to the Lithuanian answers.

Study materials for C/CE drivers: 300 questions with explanations, lessons, quizzes and practical scenarios. Based on Lithuania's and EU rules.

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