Got inspiration from these amazing maps.
The first link is to a wired article about proposed fantasy transit maps for major cities
The second article is a concept map based on BARTs original 1950s plans

http://www.wired.com/wiredscience/2013/12/the-best-maps-of-2013/
http://www.wired.com/wiredscience/2014/01/fantasy-transit-maps/?cid=17692694#slide-id-516531

I found inspiration in how these maps are layed out and displaying key information.

The route colors are segmented around this traffic circle which provides a visual explanation that routes are overlapping.

 Nodes are denoted with white circles

Wayfinding Maps on Utility Boxes

"From the Canadian Design Resource site, here are a couple of images (click to enlarge) of an interesting deployment of wayfinding maps in Victoria, British Columbia.

As you can see, they have actually applied the maps to existing utility boxes, which has a number of benefits:

• The maps add a second level of functionality to the utility box, while also making it more attractive.
• The approach eliminates the need for additional installations in the right-of-way, and minimizes visual clutter in the environment.
• The thee-dimensional nature of the boxes makes the maps more noticeable than they would be on a flat sign panel.
• The consistent location of the utility boxes (on signal poles) helps users to find the maps as they move throughout the area.
• And of course it’s a great use of resources."

- See more at: by Mark Denton on November 17th, 2008

http://www.fd2s.com/2008/11/wayfing-maps-on-utility-boxes/#sthash.CiqjqQBp.dpuf