Convert flat roundish meshes to angular meshes I extracted road markings using Open Data and Python. In the attached screenshot the road markings are still rounded. Since road marking is usually not roundish but angular, I would like to design the meshes also angular.

The attached screenshot is a. svg image imported into Blender. Would it be possible to convert all surfaces into splines and then widen them to create rectangular road markings? 

Is there a solution in Blender?
this is one possible way to make roundish curves  into angular meshes:

this is a curve object (closed):



in edit mode you can select all nodes and convert them as vector



which will "straighten" curves changing nodes handles



which will become



if you can get those shapes as svg, you could try steps above...

edit:

note, you can get perfectly square shapes if source svg curves have suitable control points, like in this example below: