Also, when right-clicking a one-way road of any type, including highways, the driving direction is reversed. Despite the name, the tool can also be used to change any form of road to another, including 'downgrades' to narrower or less decorated roads. Upgrade – allows for changing existing roads to a different road type.Freeform – allows for the construction of straight and curved roads.To make a curved road, click the curved road option near the bottom left of the screen, then use the left mouse button to make a point which is used as a tangent for curve in the road, then adjust the curve of the road to your liking and then click again to build the road, this can be repeated and the road editor will connect to other built roads. Curved – allows for the construction roads that curve and bend.Straight – allows for the construction of road sections in straight lines by choosing the start and end points.There are four different options for drawing roads, which are listed below. Road construction and tools Building a Road The driving side cannot be changed later in the game. When creating a new city, the side of the road (left or right) on which vehicles drive can be selected.