You are entering an area of roadworks. There is a temporary speed limit displayed. You should

أنت تدخل منطقة أشغال طرق, هنالك علامة مؤقتة للسرعة, عليك ان

Explanation: Where there are extra hazards such as roadworks, it's often necessary to slow traffic down by imposing a temporary speed limit. These speed limits aren't advisory, they must be obeyed.

Category: Arabic - Rules of the Road

References: Highway Code: Rule 288, Know Your Traffic Signs: Page 139