Doggie-Bags from Overtaxed Restaurant Analogy
In the last post, commenting briefly on how some San Franciscans were lamenting the deletion of the uncrowded and redundant line 26-Valencia, I compared the 26 to a restaurant ….
Yes, we all like to ride uncrowded buses. I really enjoy dining in uncrowded restaurants too. And yet the odd thing is, however much I patronize my favorite uncrowded restaurants, they seem to go out of business sooner than the crowded ones do. I wonder why that is?
As always, the danger of fast posting is that you end up with comments that are much smarter than the post. Commenter Spyone, for example, explained some of the economics of the restaurant business.
In transit, the vehicle itself is the service provided to the customers, and (to a limit) additional customers do not increase cost. In a restaurant, a tiny fraction of the customer’s bill pays for his chair. Due to this fact, a restaurant actually operates best if it is rarely full. The extra chairs represent emergency capacity (for special events and the like), while it is the staffing that is adjusted to meet projected demand.
Which oddly leads me to realize on of the major problems with creating a frequent network: in most transit systems, staffing is per-vehicle rather than per-passenger, so it is more cost effective to
serve more passengers by using bigger vehicles rather than more vehicles. If frequency is your goal, the opposite is what you want: more vehicles (possibly smaller vehicles if that represents any kind of
savings) running more often.
In most transit in the high-wage developed world, the dominant element of cost is the driver. This is why there’s so little money to be saved by running smaller buses in areas of smaller demand. I’ve met many small-bus proponents who seem to think that we could just chop all our big buses in half and have twice as many small ones, but alas, it doesn’t work that way. Small vehicles may be marginally more fuel-efficient and offer a more intimate look-and-feel, but these are small factors compared to the constant cost of labor.




Actually, I explored that idea in a thought experiment, here. What if fares were inversely related to crowding? We could endure crowded conditions for a bargain, or pay more for more space, just as we do on the airlines. It’s actually possible to imagine, with the next generation of smartcards, a fare system where fares varied in real time according to how crowded the vehicle was. Essentially, you’d be charging for transit the same way you and a few friends might pay for a ride you take together — by splitting the actual cost among you. I don’t recommend this, but I recommend thinking about it as a way to broaden your notion of what fares can do. The Cap’n goes on:
Often, a route that does something unique in the network may fail because it was never run frequently enough, but the 26-Valencia, which was only a block from parallel service on Mission St., was not one of those. Yes, you might have saved the service by investing massively in it, but that wouldn’t have changed the fact that the Valencia and Mission markets are mostly overlapping, so you’d have ended up dividing the market between these two streets, yielding a much less efficient network. The most efficient network gives you one line that goes the direction you want to go, and then runs the greatest possible frequency on it, including a mixture of local-stop and limited-stop service if the corridor is long, as Mission is.
Pantheon, meanwhile, was curious about why a bus route engages such feelings of attachment:
One of the joys of life in a big city is that anything, even a bus line, can be a gateway to associations and memories, like Proust’s madeleine. Fortunately, this (very occasional) rider’s memories have clearly survived the demise of the 26-Valencia, as will we all.