Kelias 95LEARNING SPACE
FREIGHT TRANSPORT

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Initial professional qualificationLithuania / EU · C / CE
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QUESTION 010Not studied yet

In an illustrative gear operating-range diagram, at the same road speed, 8th gear corresponds to 1 500 rpm and 9th gear to 1 150 rpm. A range of 1 200–1 600 rpm is specified for these conditions. Will engine speed remain within it after shifting to 9th?

Illustrative example • gear operating rangesCompared with sources

Answer

No. Engine speed would fall to 1 150 rpm, below the specified range. Under the conditions given, 8th gear keeps engine speed within that range.

Please note

All values are illustrative; 1 200–1 600 rpm is not a universal standard for economical or safe operation.

A simple explanation

A gear operating-range diagram relates road speed, the selected gear and engine speed. At the same road speed, a higher gear usually reduces engine speed, so sufficient pulling power must still be available after the shift. In a real truck, follow its specifications and transmission operating instructions.

REMEMBER

Before shifting, consider where engine speed will end up.

Sources and checks

Editorial review: 2026-09-28.

Learning objective: Check whether engine speed remains in the specified operating range after a gear change. EU syllabus area: 1.1. MIT sets out the relationship between road speed, engine speed and the overall gear ratio. Volvo confirms the importance of load and gradient; the task's figures are not manufacturer data.

Answer compared with sources: 2026-09-28.

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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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