The one-seat slowdown

In the article about the 19th Avenue Subway, I wrote briefly about the plans for the J to cover the portion of the M route in Ocean View (Randolph, Broad, and San Jose). Residents of Ocean View are now faced with a trade-off when trying to get downtown. They will experience a faster ride if they take the J to SFSU Station and transfer to long, fast M trains to continue inbound. However, some people are not happy about the loss of a reasonably quick one-seat ride, since their current route will be replaced with the J coming all the way around through Balboa Park. The J is going to spend a lot more time in mixed traffic than the M does currently, and so taking it downtown from Ocean View is likely to be a slow and unreliable ride. While we should think about what will keep the J reliable, we might also want to consider doing something else to mitigate the concerns of Ocean View residents.

Let’s take a look at the N. A large percentage of this route is at-grade, and getting from one end to the other is very slow. This sounds familiar! During commute hours, when subway space is limited and people from the forties need to get downtown in a reasonable amount of time, Muni runs an express route along this line. The NX-Judah Express aims to get people from further out to downtown quickly by skipping lots of stops in the middle and using faster one-way, timed-light roads where possible to keep the buses moving. Plenty of bus routes have matching express routes during commute hours. The 1-California and 38-Geary each have two express routes which use Bush and Pine to get downtown quickly. The 7X-Noriega Express uses Oak, Fell, Franklin, Gough, Golden Gate, and Turk. Express routes for the 8 and 14 use freeways. But most light rail lines do not need an express route since the subway generally obviates the need for them. To support a light rail express line, we need to be able to get people from far-flung areas onto fast roads and keep them there until we get close to downtown. With the J extension to SFSU, the line might become eligible for such treatment.

280 and 101 can be used to transport people express from the Glen Park areas to downtown more quickly than it would take to crawl all the way around and finally get into the subway. Stops between 19th Ave & Randolph St and San Jose Ave & Santa Rosa Ave would be serviced by the express bus, after which it would take 280 via Baden and either Circular Ave or Monterey Blvd. From there, it can get on 101 via the Alemany Maze interchange. The Central Freeway will allow the bus to exit on Mission to service Van Ness & Market. The bus can make normal J stops up Market from there. (Other designs might make different stops downtown or use a different route to get there, as the NX tries to serve the Financial District more specifically. I tried to make this serve existing downtown J/M stops as closely as possible.)

map

Now that the JX services stops up to Santa Rosa, we can turn around more J trains at Glen Park. This already happens during commute hours, but it’s rare, and with the JX to supplement service past Glen Park we will be able to get away with turning some trains around more quickly than we would be otherwise. This would help keep the route more reliable for residents further inbound on the route.

Of course, there are other concerns at play here. I don’t normally like introducing express buses, because they are an expensive proposition with regard to how much service they actually provide. Muni will be forced to increase its peak bus fleet to accommodate the extra commute-time load. The J station at Glen Park is somewhat confusing if trains are turning back there, since trains can’t cross over to the inbound track from the outbound side. I’m not sure how expensive installing this extra track would be. Furthermore, extremely heavy traffic on the freeways may mean the bus won’t save any time after all! However, if this idea gets more people on board with the 19th Avenue Subway by assuaging concerns over the reliability of the J and preservation of a somewhat quick one-seat ride to downtown from Ocean View, then I think it’s worth studying.