Why should you take down a roof box when you are not using it?
“Roof boxes and rails create an unnecessary air resistance and slows the car down. A roof box can increase fuel consumption by more than a decilitre each 10 kilometres.” (Swedish Transport Administration)
This is an example of one of the driving theory questions at Körtkortonline.se. There are questions in three languages: English mock test, Swedish mock test and Arabic mock test
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