Human Transit

Frequent networks: escaping the “food desert”

Posted on August 17, 2014 in Frequent Networks, Houston, Urban Structure

For their piece on food deserts this week, National Geographic led off with this map of Houston. It shows where large numbers of people who lack cars are located more than 1/2 mile from a grocery store.

"Public transportation may not fill the gap," the article says, but sometimes it can. The article doesn't mention it, but Houston METRO's proposed System Reimagining will actually liberate many people, but not all, from the "food desert" problem.

One thing is for sure: When we're talking about errand trips like groceries, most customers don't have a lot of time. If there's a line to check out of the grocery store, and you miss an hourly bus, you'd better not have bought anything that needs refrigeration, and certainly nothing frozen. So as always, frequency is freedom.

So if you need frequency, Houston's transit system today is basically willing to take you downtown, which is not likely to be the path to your nearest grocery story. Here's the frequent network today.

It's radial, good for going downtown but not for many other purposes. If you're lucky it will take you to a grocery store, but more likely it misses the ones nearest you. And of course you may not be on this network at all.

Here's the reimagined frequent network:

Compare this to the food desert map (to see the detailed Reimagined network maps, see here) Many of the areas of concern, especially those in the southeast and southwest, get a much richer network in a grid pattern. The grid pattern means ready access to many commercial centers in your part of town, not just to the major destinations of the region. And of course, a much larger share of the "food desert" areas are on this network, so that they can make shopping trips that take an hour instead of all afternoon.

Another crucial thing about the grid is that by running in all directions, it cuts across socioeconomic divides. Low-income people can get out of their enclaves to reach both jobs and commercial services in more prosperous areas nearby. (This frightens some people on the upper side of these divides, but it's one of the basic ways that good transit that's broadly useful creates paths out of poverty.)

(Remember: Most low-income people are busy! They have to be frugal with time as well as money!)

Not all the "food deserts" can be healed with transit. Some of the highlighted areas on the food desert map are in the northwest and northeast, outside of loop 610. Low-income housing in this area takes many forms, but a lot of it is semi-rural, and the built environment is often very hostile to both pedestrians and efficient transit routing. Some of these areas also have declining population. Our plan does try to offer some options in these areas, but transit is not the primary solution to the food desert problem there.

But over a very diverse range of Houston, the way to get low-income people to decent healthy food is the way you achieve so many other benefits: environmental, economic, and social: an abundant frequent transit system, in a grid pattern, that reaches across all the parts of the city that are dense enough to support it.

Charging for connections is insane

Posted on August 12, 2014 in Connections, Transfers, Fares, Los Angeles

Congratulations to Los Angeles Metro, the latest transit agency to make connections (also called transfers) free. There are footnotes: you have to be using a smartcard, but if you're in Los Angeles for more than a day or two you should already have one. The big point is this: The core of the Los Angeles transit network is the liberating high-frequency grid, which relies on the assumption that passengers can be asked to change buses once. Until now, the agency's policy of charging passengers extra to change buses was in direct conflict with the foundational principle of its network design.

Once more with feeling; Charging passengers extra for the inconvenience of connections is insanely self-destructive. It discourages exactly the customer behavior that efficient and liberating networks depend on. It undermines the whole notion of a transit network. It also gives customers a reason to object to network redesigns that deliver both greater efficiency and greater liberty, because by imposing a connection on their trip it has also raised their fare.

For that reason, actual businesses don't do it. When supposedly business minded bureaucrats tell us we should charge for connections, they are revealing that they have never stopped to think about how the transit product is different from soap or restaurants. The difference is that your success relies on products working together, the so-called network effect. So tell them to think about airlines: Fares that require a connection are frequently cheaper than nonstops. That's because the connection is something you endure for the sake of an efficient and broadly useful airline network, not an added service that you should pay extra for.

There was, for a while, an argument against free transfers that arose from the ease of abusing paper transfer slips. These slips, issued in return for a cash fare and to be presented on your second bus or train, were easy to give away or sell. Many US systems eliminated transfers and offered day passes instead, which improved security but at the high cost of discouraging spontaneous trips.

In any case, as soon as a transit agency has a working smartcard, there's no excuse for connection charges. They sometimes linger because managers and elected officials are desperate for revenue but are afraid to raise the base cash fare. In some cities, local journalists are too lazy to understand fare structures and just write quick scare stories whenever the base fare goes up. This motivates transit agencies to do desperate and devious-looking things to raise other charges, just as a simplistic obsession with low fares has caused airlines to invent endless fees.

But what matters is not just that the fare be low. It needs to be fair, and it needs to encourage people to use the system in more efficient ways. An efficient and liberating network requires connections, so penalizing connections is an attack on your network's efficiency.

Spokane: two events on friday!

Posted on August 4, 2014 in General

This Friday 8/8 I'll be back in Spokane, Washington for two public events, among other things.

"Back" because once I've led a transit network design for a city, as I did in Spokane in 2000-01, it means I've been all over it in detail, so it feels like home in a way. And once the design has been implemented, and has become the foundation for how the city gets around on transit, it's like having an offspring to visit there.

I'll be doing two public events. Here's the one at lunchtime, which is likely to touch on downtown issues:

Here's the evening one:

Neither seems to require an RSVP, so feel free to surprise us with the turnout!

If a carpenter can’t be a hammer opponent, then I can’t be a streetcar opponent

Posted on August 1, 2014 in Journalism, Language, Philosophy, Streetcars (Trams), Toronto

I’ll be leery of Toronto Star interviews in the future, because I explained my view carefully and that’s not how it came out:

Jarrett Walker and Rob Ford (see Rob Ford’s policard) don’t have much in common. One is an Oregon-based transit consultant, the other Toronto’s chief magistrate. One blogs avidly, the other disdains the media. Whereas Ford rails against the “war on the car,” Walker touts the virtues of buses.
But on one issue, at least, the policy wonk and the conservative politician agree: streetcars are overrated. Walker is decisively on one side of a new debate in the U.S., over whether the trendy form of rail transport springing up in American cities makes practical sense.

My actual view is too long for a soundbite but should not have been too long for an article. My view is that streetcars mixed with private car traffic are overrated. I was very clear with the reporter that all of my critiques of the US streetcar revival movement are about streetcars in mixed traffic. In the Toronto context, I specifically distinguished between the old downtown Toronto mixed traffic streetcars, which are nearly inoperable due to traffic impacts, and Toronto’s exclusive-lane light rail segments such as Spadina and St. Clair. None of my concerns about streetcars apply to the latter.

Here’s the bottom line. Streetcars are just a tool. They can be used in smart ways and in stupid ways. Asking a transit planner for an opinion about a transit technology is like asking a carpenter what his favorite tool is. A good carpenter sees his tools as tools and chooses the right one for the task at hand. He doesn’t use his screwdriver to pound nails just because he is a “screwdriver advocate” or “hammer opponent”. Yet the Toronto Star assumes that nobody involved in transit debates is as smart as your average competent carpenter.

To call me a streetcar advocate or opponent, you are imposing on me your own assumption that the bus-rail debate is the most important conversation about transit. This is the Toronto Star’s assumption, but it’s not mine. In fact, my work is about blowing up that assumption, and suggesting that instead of falling in love with vehicles, wires, and propulsion systems, we might consider falling in love with the freedom to get where you’re going.

Email of the week: on Robert Steuteville’s defense of slower-than-walking transit

Posted on July 28, 2014 in Access, Mobility, Philosophy, Streetcars (Trams), Symbolic Transit, Technophilia

I don't have time to respond to everything that gets published on transit, but Robert Steuteville's must-read piece today on the Congress for the New Urbanism blog, which explains why we should invest in transit that's slower than walking*, certainly deserves a response.

Fortunately, sometimes an email does it for me. From Marc Szarkowski:

Hi Jarrett,
Perhaps you've already noticed this piece and are already penning a response (even though several already exist on your blog!). It seems to be another example of the "urban designers are from Mars, transportation planners are from Venus" phenomenon you described some time ago.
I admire and respect Robert, and I think his "place mobility" concept is quite sensible. Indeed, one can argue that the first and most powerful rung on the transportation "efficiency" ladder is to ensure that destinations are within walking/bicycling distance wherever possible, obviating the need for cars and transit in the first place, in turn freeing up the latter two for long-distance travel. But after the "place mobility" concept, I think the article begins to fall apart.
It seems to me that it's easy to romanticize slow transit if you don't have to rely on it all the time. With all due respect, I get the impression that many "streetcar tourists" use transit only occasionally when visiting a new city, or perhaps to go to a ball game, but for little else. And I get it: if much of your day-to-day travel is characterized by routinized, featureless car trips between work, shopping, meetings, and whatnot, I can see the allure in taking a break to relax and 'go slow,' as it were.
But the romantic impulse towards slow transit wears away quickly if you have no choice but to rely on it all the time! I don't have a car, so I rely on buses that travelexcruciatingly slowly, wasting much of my time. (I have, for example, learned to pad an hour between meetings and appointments in different parts of town, simply because the mixed-traffic transit takes so long to get from A to B to C.) So, rather than viewing slow transit as an opportunity to unwind and watch the street life pass by, I see it as a precious-free-time-gobbler.
I love to be immersed in street life when I'm walking, but when I inevitably need to travel beyond walking distance, I want to get there quickly. Does this make me a so-called "speed freak?" If so, wouldn't all the urban designers out there praising slow transit for others - while they hurriedly shuttle from charrette to public input meeting to office to daycare in their cars – be "speed freaks" too? The reality is that most of us – walkers, bicyclists, drivers, and transit riders alike – are "speed freaks" most of the time, simply because we prefer minimizing travel time and dedicating our precious free time to friends and family.
And this gets back to "place mobility:" it is great when many daily necessities – the grocery store, the bank, the library, the elementary school – are within walking distance. But – and this perhaps reveals a conceptual flaw in New Urbanism – not every place can or should be a self-contained "village." As Jane Jacobs argued, the whole point of cities is to offer rich opportunity – opportunity that requires travel beyond whatever a "village" can offer: "Planning theory is committed to the ideal of supposedly cozy, inwardly-turned city neighborhoods. [But] city people aren't stuck with the provincialism of a neighborhood, and why should they be – isn't wide choice and rich opportunity the point of cities? (Death and Life, 115-116)."
For example, I may be fortunate enough to have a daycare center on my block, but perhaps I want to send my kids to a magnet or private school across town – a school better than my neighborhood school? So would my kids rather wake up at 5am to take a streetcar sitting in traffic to get to school, or wake up at 7am to take a faster subway or a bus on a bus lane? I may be fortunate enough to have a pharmacy on my block too, but what if the doctor I trust is across town? Would I rather take the whole day off from work to take a streetcar sitting in traffic and delayed by a poorly-parked car to get there, or could I take a half-day by taking the subway or the crosstown express bus? For better or worse, there will always be long-distance destinations, and I suspect transit riders will continue to prioritize speed for these trips.
As for the short, local trips made possible by "place mobility," I still wonder whether mixed-traffic streetcars are the best bang for the buck. Yes, they are a placemaking tool, but they're not the only (or the cheapest) one. If, as admitted in the article, mixed-traffic streetcars don't particularly offer useful transit, nor are they necessarily the only/best/cheapest placemaking tool, then I have to wonder if 30 years from now we'll look back on them as yet another expensive urban renewal fad. (American cities are still littered with half-dead "game changing" fads from the 50s, 60s, 70s, and 80s.) We ultimately need rapid transit and "place mobility," but mixed-traffic streetcars are hardly a prerequisite for creating the latter.
So far I've hesitated voicing these opinions to fellow urbanists because I don't want to alienate any friends, but I'm increasingly skeptical of the streetcar fervor. Given that (A) mixed-traffic streetcars are simply slower and less-flexible than mixed-traffic buses, and (B) that the benefits that are packaged with properly-prioritized streetcars (dedicated lanes, signal priority, durable shelters, etc.) could just as easily be packaged with buses, I wonder if the streetcar fervor is an example of simple "technograndiosity." At the end of the day, I'd rather have ten bus lines reaching twenty useful places than one streetcar line reaching two useful places.

(Marc Szarkowski creates plans, models, diagrams, and illustrations of urban design, streetscape design, and planning proposals, and is a regular rider of Boston's, Philadelphia's, and Baltimore's transit systems.)

*Most new streetcars in the US have average scheduled speeds of 6-10 mph, a jogging or running speed for able-bodied adults. However, actual travel time (compared to a private vehicle alternative) includes the average wait time. Most US streetcars are not very frequent (usually in the 15-20 minute range) given the short trips that they serve, so it is the high wait time, combined with the very slow ride, that makes them slower than walking. Again, this calculation describes the experience of an ordinary working person who needs to get places on time, not the tourist or flaneur for whom delay is another form of delight.

New Orleans: nine years after hurricane, transit is far from restored

Posted on July 25, 2014 in New Orleans

by Evan Landman

A sobering new report was released recently by Ride New Orleans, a nonprofit advocate group. It covers the erosion of the city's transit network in the years following 2005's Hurricane Katrina, revealing that while the city's population and economy have largely recovered, its transit services have not.

Some key points from the report:

In 2004, RTA's peak fleet was 301 buses. By 2012, that number had dropped to just 79.
Revenue hours declined from over 1 million prior to the storm to fewer than 600,000 in 2012.
By 2012, only 36% of the pre-storm daily trips had been restored.
In 2012, no bus routes in the entire system operated at 15 minute or better frequency, down from 12 previously.
Meanwhile, overall service level on the city's historic streetcar routes declined by only 9%, and the number of available vehicles (66) is the same today as in 2005.

Ride's frequency maps tell the story even more viscerally:

What accounts for the difference between the relatively robust network of 2005 and today's service offering? Obviously no transit agency would have an easy time recovering from the damage done to its vehicles and operational infrastructure by a catastrophic event like Katrina. It would be ludicrous to suggest otherwise. But nearly a decade on, something has prevented RTA from ramping back up to its prior service level.

Ride's analysis points to a number of factors. First is a decline in fare revenues, attributable both to the smaller population of the city since the storm, the diminished service offering, and a base fare of just $1.25 which hasn't increased since 1999. Second, since the storm, RTA's operating costs have increased dramatically, to around $168/revenue hour. This is much higher than many peer agencies, and as such limits the amount of service RTA is able to deploy with its current resources. The report also raises questions about the agency's decision to prioritize the restoration of the historic streetcar system.

It's clear that RTA has faced unique challenges; even the transit systems effected by Hurricane Sandy did not have to deal with the mass population displacement or degree of infrastructure damage New Orleans sustained. But while the city's transit service is today in dire straits, if Ride's analysis is correct, it cannot long continue, as it appears RTA is now operating at a deficit, and rapidly drawing down its reserves.

Thus, an opportunity exists on the horizon, for RTA and for the city of New Orleans: to reimagine transit in a manner that helps more people travel to more destinations more easily, and to develop a durable system less vulnerable to disruption. Clearly this would be a difficult undertaking, but if continuing down the present path implies continuing to provide vastly inadequate service, at an exhorbitant cost, perhaps it is a necessary one.

How good are we at prediction?

Posted on July 14, 2014 in Access, Meditations, Philosophy, Technophilia, US Federal Policy, Values, Words, Unhelpful

Transportation planning is full of projections — a euphemism meaning predictions. Generally, when we need a euphemism, it means we may be accommodating a bit of denial about something.

Predicting the future, at a time when so many things seem to be changing in nonlinear ways, is a pretty audacious thing to do. There are professions whose job it is to do this, and we pay them a lot to give us predictions that sound like facts. I have the highest respect for them (all the more because what they do is nearly impossible) but only when they speak in ways that honor the limitations of their tools.

Good transportation planning does this. at the very least, it talks about future scenarios rather than predictions, often carrying multiple scenarios of how the future could vary. Scenarios are still predictions, though; they're just hedged predictions, where we place several bets in hope that one will be right.

I will never forget the first time that I presented a proposed transit plan and was told: "that's an interesting idea; we'll have to see how it performs." The speaker didn't mean "let's implement it and see what happens." He meant, "let's see what our predictive model says." You know you're inside a silo when people talk about prediction algorithms as though they are the outcome, not just a prediction of the outcome that is only as good as the assumptions on which it's built.

What's more, we seem to be really bad at predicting curves, or even acknowledging them as they happen.

Something really important happened in the US around 2004, which experts call the "VMT Inflection." Vehicle Miles Traveled in the US — the total volume of driving — departed from a linear growth path that it had followed for decades, and went flat. Here's the same curve looking further back. Around 2003, you could be forgiven for thinking that this steady slope was something we could count on.

(At this point an ecologist or economist will point out that the VMT inflection shouldn't have been a surprise at all. This graph looks like what a lot of systems do when their growth runs into a capacity or resource limit. The VMT inflection is a crowdsourced signal that the single-occupant car is hitting a limit of that kind.)

So reality changed, but the Federal projections didn't. Even as late as 2008, when the new horizontal path had been going for four years, Federal projections claimed that the growth in driving would immediately return to the previous fast-rising slope. Again:

This isn't prediction or projection. This is denial.

All predictions rest on the assumption that the future is like the past. Professional modelers assume their predictive algorithms are accurate if they accurately predict past or current events — a process called calibration. This means that all such prediction rests on a bedrock idea that human behavior in the future, and the background conditions against which decisions are made, will all be pretty much unchanged, except for the variables that are under study.

In other words, as I like to say to Millennials: the foundation of orthodox transportation planning is our certainty that when you're the same age as your parents are now, you'll behave exactly the way they do.

We describe historical periods as "dark" or "static" when that assumption is true. Over the centuries of the European Middle Ages or Ancient Egypt, everyone acted like their parents did, so nothing ever seemed to change except accidents of war and the name of the king or pharaoh. Our transportation modeling assumes that ours is such an age.

Historical progress arises from people making different choices than their parents did, and there seems to be a lot of this happening now.

What we urgently need, in this business, are predictions that try to quantify how the future is not like the past; for example, by studying Millennial behavior and preferences and exploring what can reasonably be asserted about a world in which Millennials are in their 50s and are in the position to define what is normal, just as their parents and grandparents do today.

We already know that the future is curved. (With rare exceptions like the growth of VMT from 1970 to 2004, the past has been curvy as well). Millennials are not like their parents were at the same age. There will be major unpredictable shocks. There are many possible valid predictions for such a future. The one that we can be sure is wrong is the straight line.

My work on Abundant Access – part of the emerging world of accessibility studies — is precisely about providing a different way to talk about transportation outcomes that people can believe in and care about. It means carefully distinguishing facts from predictions, and valuing things that people have always cared about — like getting places on time and having the freedom to go many places — from human tastes that change more rapidly — such as preferences and attitudes about transit technologies. It's a Socratic process of gently challenging assumptions. Ultimately, it's part of the emerging science of resilience thinking, extending that ecological metaphor to human societies. It posits that while the future can't be predicted there are still ways of acting rightly in the face of the range of likely possibilities.

Imagine planning without projections. What would that look like? How would we begin?

tucson: a frequent network map

Posted on July 12, 2014 in Tucson

Just back from a great trip to Tucson, at the invitation of ten local organizations, including the transit agency, all put together by the University of Arizona's Drachman Institute. (Thanks to everyone I worked with there, including everyone in the crowd of 200+ who turned out on a Friday night to talk transit with me. I had a great time.)

For reasons that I first explained here, I always encourage transit agencies to map their frequent network — the network of services coming every 15 minutes or better all day. Since there wasn't one for Tucson, I asked our graphics expert PJ Houser to draw one, which I also shared at several of my events.

This map is important! It shows where transit is useful to people in a hurry, people who don't have time to wait long. It's also usually the backbone on which future expansion will be built, and a logical focal point for location choices, and thus development, for people and organizations that want or need to rely on transit. The network includes several major bus lines as well as the soon-to-open streetcar. It also shows the promising beginnings of a high-frequency grid.

So here it is! For a sharper one: Download Tucson Frequent Network

california topples a tyrant

Posted on July 8, 2014 in Language, Words, Unhelpful

Is "reduced congestion" a positive environmental impact in cities? Is it good for the environment to have endless lanes of free-flowing traffic everywhere?

It's a bizarre claim when you look at how prosperous, sustainable, and livable high-congestion cities are. (They tend to be places where you don't have to commute so far, by example, and their overall emissions tend to be lower.)

Yet until now, all California transit infrastructure has had to conform to an analysis process that treats traffic congestion as a threat to the environment. A metric called Level of Service — congestion experienced by motorists, basically — could not be made worse by an infrastructure project, even one whose purpose was to reduce the impact of congestion on the economy, by providing alternatives to driving.

Thanks to a state bill nearing approval, this provision of the California Environmental Quality Act — which has caused years of delay and cost-escalation on transit and bicycle projects — will no longer apply to urban transportation projects or to much transit oriented development. Eric Jaffe's long article today from the barricades of this revolution is a great read. Key quote:

Level of service was a child of the Interstate Highway era. The LOS concept was introduced in the 1965 Highway Capacity Manual, at the very moment in American history when concrete ribbons were being tied across the country, and quickly accepted as the standard measure of roadway performance. LOS is expressed as a letter grade, A through F, based on how much delay vehicles experience; a slow intersection scores worse on LOS than one where traffic zips through. Planners and traffic engineers use the metric as a barometer of congestion all over the United States.
In California, LOS has an especially high-profile. As the primary arbiter of traffic impacts under CEQA—adopted in 1970 by Governor Ronald Reagan—the metric not only determines the fate of many transportation and development projects, but has the awkward role of promoting car use within a law designed to protect the environment. "We have one section of CEQA saying we've got to reduce greenhouse gas emissions," says transportation consultant Jeffrey Tumlin of Nelson\Nygaard, "and another section of CEQA saying we need to accommodate unlimited driving."

Level of Service is an example of rhetoric that we all have to learn to challenge: the effort to hide strong value judgments inside language that sounds objective or technical. A key move is to rely on terms that sound vague, neutral, and boring ("Level of Service") to describe something that's actually expressing a strong ideology — in this case, asserting the superiority of some street users over others. If the Level of Service Index had been called, say, the "Free Flow of Cars Index" it would have been much clearer who was being excluded by it, and how blatantly it contradicted many other widely-shared goals for California's cities.

Tip: If a term sounds vague, neutral, and boring, demand a precise definition. Confused words imprison our minds. You'll be called a geek for caring about something as boring as "Level of Service," but in the end, you may help topple a tyrant.

Photo: Children with toppled statue of Stalin. The Times.

seeking: good examples of island bus stops behind sliplanes

Posted on July 8, 2014 in Information Requests

For a client in the Middle East, we are looking for good examples of this situation:

Two high speed streets intersect, and the intersection features sliplanes (shortcuts for right turns) which in turn create islands (in green above). The islands are big enough that bus stops can be placed on the island. Transit lines run east-west and north-south (not turning at this intersection.)

One bus stop on an island like this is common enough, but I'd like to find examples of the situation above, where two intersecting bus lines stop on the same island — one nearside, the other farside — so that the island becomes a very easy transfer point, at least if you're travelling (in this drawing) between points west and points south, or between points east and points north.

If you've seen this arrangement, please leave a comment! Thanks!

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