Why has this happened? In the first place, it seems as if railway are managed by people who do not use the system themselves and do not understand what railways are about. In the second place, they are desperate to get rid of staff as half of the labour costs of any business consists of tax. Thirdly, they have got themselves into a position where what is known as ‶yield management″ has to be exercised to the highest degree.
The railway have always done yield management. As early as the 1840s, excursion trains were run on Sundays, to make use of rolling stock that would otherwise have been standing idle in sidings. Later on, the principle was applied by keeping a reserve of old rolling stock which would otherwise have been scrapped; some of this was parked in remote locations over the whole of the winter season, to be brought out for the busy summer timetable.
These spare carriages could be brought into service at short notice; photographs of trains in the 1920s often show one or two old vehicles at the front, which would have been attached at the last moment if a lot of passengers turned up. Timetables had built-in slack to allow for the extra weight of these ad-hoc additions, while steam locomotives could, at need, be worked harder than their normal design capacity.
From the 1960s onward, the practice of using fixed formation set trains like the British Inter-City 125 came in, though these were more flexible than subsequent trains, since the carriages themselves were relatively simple trailer vehicles which could be added or removed to suit the traffic. Older rolling stock was simply scrapped instead of being kept as a reserve.
Thus, the railway having got themselves into a straitjacket, have to match a fixed supply to a highly variable demand, which is the root cause of the current user-hostile fares and ticketing systems. Even so, simplification is possible. There is no reason for tying passengers to particular trains; in most situations, a two-tier fares structure - peak and off-peak - should suffice to even-out demand to the fixed supply. In the longer term, the railways need to return to the older practice of retaining a reserve of stock which can be stored without deterioration for several months at a time.
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