For ordinary parallel parking, unless signs or markings authorise another arrangement, on which road may you park on the right-hand side?

普通沿路平行停车，且无标志或标线另行准许时，哪种道路可在右侧停车？

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Two-way roads normally require parking on the left. Special signed or marked arrangements are outside this ordinary-parking question.

双向道路一般靠左停车；本题不把右侧有合法特殊停车标线等其他安排混作普通右侧停车许可。