As I mentioned two days back, the new Spokane, Washington network map [Full PDF], designed by CHK America, is exceptionally clear in presenting the layers of the network so that you can see all of the following at a glance;
- The network of frequent services, useful to you if you aren't willing to wait long.
- The network of all all-day services (frequent or not), which is the total network if you're travelling midday.
- Supplementary express services, mostly peak-only, that are likely to be useful only to the regular peak hour commuter. These always contain a high degree of complexity, so they must be presented in a way that visually recedes from the rest of the network, so that the all-day network is clearly visible.
The key point is that each layer is never allowed to distract from the ones above it.
But it has one other important feature that I should mention: If you look closely, you'll see that its content is still there if you copy it to black-and white. Line widths and styles distinguish all the service categories from each other. The only exception is the distinction between "Shuttles" and "Frequent Routes", both wide lines, and this matters less than it seems because the shuttles are frequent too.
All this is relevant not just because the world is still full of black-and-white photocopiers, but also because of color-blindness. Matt comments: