Skip to content
BDifficulty 2/5

On the open road, to reduce aerodynamic drag and help save fuel, you should...

Correct answer

Drive with the windows closed

Closed windows reduce aerodynamic drag compared with open windows. Maintain adequate ventilation and a safe, legal speed suited to conditions. There is no universal 90 km/h speed appropriate for every road and circumstance.

Practice more B licence questions

A 3-minute quick test with exam-style questions. Free, no signup.

All options

  • Always drive at more than 100 km/h

  • Drive with the windows closed

  • Drive with the windows open

Editorial status: editorially approved. This status does not certify legal review. Report a correction

Share this question

Keep studying

Related questions