1. A method, comprising: selecting, by a computing device of a vehicle, a portion of a three-dimensional (3D) point cloud representing an area within a predetermined threshold distance from a surface of a road of travel of the vehicle; identifying one or more construction zone objects in the selected portion; determining, using the computing device, a likelihood of existence of a construction zone based on the identified one or more construction zone objects; in response to the likelihood exceeding a threshold likelihood, determining a severity of road changes based on a number and locations of the one or more construction zone objects; and controlling, using the computing device, the vehicle based on the likelihood of existence of the construction zone and the severity of road changes.