How to locate a speed bump?

We are currently working on a project to control suspension after recognizing speed bumps. The road sensor has been used to successfully determine the shape of the road, but in order to obtain the correct time to reach the road, information on the relative distance between the road and the vehicle is required. I want to know the coordinates of the bump to get this information, is there a way?
Or we are considering using another sensor (global navigation sensor…).