I'm thinking a simple geographical map, with lines drawn so they overlap (where there are multiple lines/routes on the same segment). My partner is a mechanica

I'm thinking a simple geographical map, with lines drawn so they overlap (where there are multiple lines/routes on the same segment). My partner is a mechanical engineer, and she says it's easier to create MTA/MBTA type of network maps on AutoCAD, but I want something with the geography still intact.