#three : simplicity and complexity
simple stop
A simple stop has a place, a route, a name, one or more whatnesses, a frequency, (or should frequency be considered only a property of a route?), a duration to each of the next stops, (duration must be in time for walking, and for route elapsed time)
junction
A junction is the conjoining of two places. It will be designed to make it as difficult as possible to be used by pedestrians. Who decides how long I have stand in the rain while metal boxes zoom by? On what rule is the decision made?
simple interchange
A simple interchange is where two routes provide an interchange possibility. They might be going in the same, opposite or some angled relation. They might share a long stretch and offer many interchange possibilities one of which is best. They might share a stop. The simple notation is for this to be shown. It almost nowhere is. There must be an explanation for this. This must be the cheapest form of possible improvement of public transport. It is nowhere done. These facts must have an explanation. It is nowhere given. There must be an explanation for this.
People who call themselves transport planners must know this. they must discuss it in their scientific literature. This is nowhere evident. there must be an explanation for this. It is nowhere given. There must in turn be an explanation for this, which is in turn nowhere given. This is a simple interchange.
complex single mode interchange
London Transport has diagrams for these. In my estimation, they are difficult to work out. Using colour coding would make them more simple. But this is a design approach and others might have different opinions. This is the link between art and science, creating sparks. We ought to be able to do something with this.
simple multi-mode interchange
This is already more complicated as you need to consider the different organisations involved. Yet an easy to find bus stop outside a railway station with a timetable is a rarity. This is of course a British phenonemon. In Germany it is consistently well done and a non- British reader will wonder what we are on about. But in developing countries all sorts of informal structures work which only the migrant worker from the west will have difficulty understanding, but as he always takes a taxi the rest can continue without him.
complex multimode interchange
There are thousands of these. They have no information.
major interchange
In some sense these are the easiest as it is more obviously recognised that there is a problem, but nowhere are they done that they cannot be improved, but there seems no learning on how to do this.