Automatic routing system with variable width interconnect

An electronic automation system comprising:

• a database of an integrated circuit design;
• a mouse input device;
• a graphical user interface tool, capable of accessing and performing operations on the database, based on input from the mouse input device;
• a shape-based automatic router tool, capable of accessing the shape-based database, to create an interconnect route path for a first net of the integrated circuit design, selected using the graphical user interface tool and the mouse, wherein the interconnect route path comprises segments having different interconnect widths,
• the automatic shape-based router tool creates a second net of the integrated circuit design, wherein the second net has a spacing so that the second net is spaced at least a first distance from the first net, and
• the automatic shape-based router tool creates a third net of the integrated circuit design, wherein the third net has a spacing so that the third net is spaced at least a second distance from the first net, wherein the second distance is less than the first distance;
• and
• a file, accessible by the shape-based automatic router tool, comprising frequency information for one or more nets of integrated circuit.