a place where thekerb (= edge of a raised path next to the road) is made to slope down to the level of the road, so it is easier for people with vehicles such as wheelchairs or pushchairs to get on or off the path

We must take the lead in providing dropped kerbs at junctions and ramps, and tactile information and acoustic signals at road crossings. 我们必须带头在路口和坡道设置下沉式路缘，在道路交叉口设置触觉信息和声音信号。