Cracks can be seen commonly on roads, and there is a good many reasons for this. This is something that construction workers have to worry about constantly because making a road that shall never develop cracks is not possible. The main causes of road surface cracks, which hamper traffic flow, are caused mainly by high loads and thermal movements. Cracks do not occur in the same way everywhere. Even on the same road, you will see different types of cracks: horizontal, vertical, fatigue and block cracks.