This is an old question that is no longer in use.
Images may be missing and the information may be dated.
Which colours do most warning signs have?
Dangerous curve ahead (A1)
”The sign indicates a dangerous curve and its direction.”
Uneven road ahead (A8)
”The sign indicates bumps or damage to the road which make it appropriate to travel at a lower speed than what would otherwise be the case.”
Falling rocks or debris ahead (A12)
”The sign indicates a risk of falling rocks and that there may be fallen rocks on the road. The symbol is adapted to the conditions of the location.”
This is an example of one of the driving theory questions at Körtkortonline.se (also in theory tests in Arabic).
There is also a driving licence book online (2023).
More examples of theory questions: