It’s hard to get the big picture with irregular service patterns. Situations where this type of operating system emerges arise as a result of considering factors such as usage trends, optimization of transport capacity, and the number of available vehicles and crew members. However, it’s also true that passengers who aren’t aware of this can be taken by surprise. The difficulty with “transforming service types” is that it’s hard to grasp the full picture just by looking at the station departure boards. In fact, there are two schools of thought regarding what to display as the destination on these boards. First, there are rail operators that display the station where the service type changes as the destination; the Keisei “Local to Takasago” service mentioned at the beginning is an example of this. In this case, the train actually goes beyond the station shown on the departure board, but this is not apparent from the destination displayed there. The other group consists of rail operators that display the final destination station on the departure board; currently, this seems to be the majority. In this case, while you can tell “how far the train goes,” it becomes difficult to determine “where it stops along the way.” It would be helpful if the departure board listed all the stops, but with a horizontal scrolling display, you might miss some. If you view information for individual trains in a paper timetable, or on an online timetable or transfer guide website, you can confirm all the intermediate stops from the starting point to the final destination, even for these “mysterious” train types. However, while a paper timetable allows you to see the entire route at a glance, online timetables and transit planning sites—which require you to view the list of stops for each individual train—can be a bit cumbersome. To put it bluntly, when using a route planner, you only need to know “where this train departs from and where it goes,” so you don’t have to worry about the “mysterious train types” on a case-by-case basis. That said, you still need to look at the departure board on the station platform to determine “which train to take next,” so there’s still a risk of getting confused there. Of course, this becomes an issue precisely because trains are distinguished by “type” and “destination”; if train numbers were displayed—as they are on long-distance train departure boards at Swedish stations—distinguishing between trains would be foolproof. However, relying on train numbers as a cue would necessitate displaying them in every single transfer guide as well. To begin with, train numbers are internal information set for operational management purposes, and it’s debatable whether displaying them as-is is a user-friendly approach.
Why Do Special Train Categories Emerge? It goes without saying that the simplest operating model is one in which “all trains stop at every station.” This pattern accounts for the vast majority of subway systems. However, on longer routes, the demand for faster service increases. Therefore, when planning operations, express trains that skip some or many intermediate stations are introduced, taking into account convenience and ridership trends. This results in the creation of multiple train types. However, in some cases, stops are designated that fall outside the framework of existing train types. One example is having a specific train stop at a particular station only during specific times or on specific routes. Furthermore, since running local and express trains separately can result in excess transport capacity, there are times when operators prefer to use a single train to serve the route. However, arbitrarily increasing the number of train categories makes it difficult for passengers to remember them. Consequently, situations arise where “hybrid categories”—trains that are physically a single train but use different categories depending on the section—emerge. Combining them into a single train instead of separate ones eliminates the need to transfer at boundary stations, improving convenience, but it has the drawback of complicating passenger information. Of course, needlessly increasing the number of train categories would also complicate passenger information in its own way.
© Source travel watch