When a departure stops making sense

There is a conversation that repeats itself in almost every small consortium we work with. Somebody opens a spreadsheet, points at the half past seven evening departure and says: "this one runs empty." From there, the discussion becomes a matter of faith.

Some argue that withdrawing it saves money. Others argue that whoever uses it has no alternative. Almost nobody has in front of them the one figure that would settle it, because that figure has never been collected.

Empty is not the same as useless

A departure carrying three passengers may be expendable or it may be essential. It depends on three things that rarely appear in the spreadsheet:

• Who travels. Three people coming back from the district hospital are not the same as three people with cars who happened to leave them at home that day.
• What happens if it disappears. If there is another departure forty minutes later, withdrawal is an inconvenience. If it is the last one of the day, it is isolation.
• What it actually costs. The marginal cost of one departure within an already-sized service is not the average cost per kilometre you get by dividing the contract by total kilometres.

Once those three factors are on the table, the decision stops being ideological. Sometimes the departure is withdrawn anyway. But it is withdrawn knowing who it affects and what compensates them.

Our procedure

Before proposing the withdrawal of any departure, we always do the same thing:

1. Measure over a full period, not a week. Seasonality deceives; a departure that runs empty in November may run full in June.
2. Cross-reference with facilities. Hospitals, health centres, secondary schools, industrial estates and care homes create patterns that average occupancy hides.
3. Calculate the real marginal cost, separating fixed fleet and staff costs from the variable cost of that specific run.
4. Design the alternative before withdrawing the service. A demand-responsive service, a coordinated connection or a reinforcement in another time band. Never nothing.
5. Document the decision, with signed technical justification. This protects whoever signs it and allows it to be reviewed in a year on evidence rather than memory.

The political cost of withdrawing a poorly justified departure is always greater than the money it saves.

The missing indicator

The same gap appears in nearly all these processes: we know how many people travel, but not how many wanted to travel and could not. Unmet demand is invisible in a fixed-route system, because whoever cannot find a workable timetable simply never appears in any statistic. They take the car, or they do not make the trip.

That is, in our experience, the strongest argument for introducing a flexible service layer: not so much for the immediate saving, but because for the first time the whole of the demand becomes visible. And with the whole demand in front of you, the conversation about which departures are surplus stops being a matter of faith.