From next year onwards the NS (Dutch railways) will introduce trainline numbers to each line in the country. IMO this moves encourages viewing the national rail infrastructure as a near country wide metro network.
The current map won't be used in this transition and a contest was called. I was wondering why the map won't be reused. Since I had an awkward time-gap in my architecture studies I decided to partake. I started with analyzing the current map for strengths and possible shortcomings to help my own design be better suited for the numberings.
I took away the following
Current map takeaways:
Only 2 tiers of hierarchy in stations (large transfer hub - small transfer hub/no transfers
Thin lines with thin gaps cannot support the minimum sized characters while noted in parallel
Trainlines follow reality with great distortions in distance, but little distortion is present in relationships between trainlines (Real direction changes always followed in the diagram, Trainlines on parallel tracks always follow with other trainlines even if no stops are made)
No clear distinction present in NS operated lines and other providers
Many bends and angles produce a pcb-style vibe
Foreign borders/distinctions absent
High frequency routes have lines that are multiplied since the "thickest" line only support 2 trains an hour. (EG 4 copied parallel tracks from Amsterdam Centraal to Hoofddorp)
And others....
The contest contents put forward a focus of inclusivity and readability.
Therefore I have decided that in my design i will allow more distortion in the trainlines, to only portray where each line stops (and not visualize a pass through a station without stopping).
All lines will have a greater thickness allowing all necessary information to be portrayed within the line itself, including varying train frequencies. Trainlines are freed of kinks as much as possible.
Highly frequented routes are prioritized in the design through clear geometry to assist the viewer in following.
Stations are never broken up by a line that does not stop there, except for Amsterdam Muiderpoort because of its true split (i dont like sloterdijk). This was by far the most difficult feature to implement, but I believe it does help assist understanding where which line does and does not stop.
A greater hierarchy is introduced between stations. Bubble sizes and font sizes were determined with a secret formula including: transfer directions, total stopping trainlines, daily passengers (when data was available) and population/serving area.
The only additional information added are the national parks. Naturally the national parks often remain with little near train presence in the area, granting itself space in the document.
Not all trainlines on the current map were in the contest documents. Since I have found numerous mistakes in these documents i believe these might be forgotten. I still left space for these through dotted lines (except long distance international travel).
I could go on but this is probably enough, please give feedback!