When may you legally pass another vehicle?
Answer: D — When the dashed yellow line is on your side of the roadway
Passing another vehicle is only legally permitted when the dashed yellow line is on your side of the roadway. This indicates that there is enough visibility and space for you to safely pass the other vehicle. The other options are incorrect because A: Passing in an unmarked zone may not be safe as there could be hidden hazards or limited visibility. B: While seeing no other cars approaching can be a good indication of being able to pass, it is not a guarantee as other cars may suddenly appear. C: Passing when there is a solid yellow line on your side of the roadway is not allowed as this indicates a no passing zone.