Home Cautionary Road Signs What is the sign for “Narrow Road Ahead”? Driving EducationCautionary Road Signs What is the sign for “Narrow Road Ahead”? By admin - August 16, 2022 205 0 FacebookTwitterPinterestWhatsApp When the width of the road decreases and the road merges into a narrow road, there is a possibility that a speeding vehicle may get collide with oncoming traffic. This sign cautions the driver to be careful as the road ahead is narrow.