On “Transit-Oriented Development”, and the importance of being en route

President Barack Obama tours St Paul's new metro system in 2014, as transportation secretary Anthony Foxx looks on. Image: Getty.

One of the problems with discussions of Transit-Oriented Development – high density development around transport hubs, known as TOD – is that the term sounds much too specialised. 

We hear talk of TODs as a special class of developments, which brings special requirements and possibilities, and perhaps requiring special expertise. In North America, we often hear that a certain development is or isn’t aTOD, as though transit-orientation were not (as it obviously is) a matter of degree.

Moreover, most of the urban development decisions that will determine the future viability of transit are not decisions about TODs. Most of them are not even conscious decisions about transit. The literature of “how to build TODs” is useless in these situations. What people need are simple guidelines about transit that they can keep in the back of their minds, and on their checklists, as they plan ALL kinds of urban development. The same principles could help institutions and individuals decide where to locate.


As a transit planner, I constantly encounter situations where something has been built in a way that precludes quality transit – where I can see that, if it had been built a little differently, transit would have been possible without compromising any of the development’s other goals.

I’ve also dealt with situations where a transit-dependent institution – say, a social-service office catering to low-income people, or an assisted living centre for active seniors – chose to locate in a place where the land was cheap because the transport options were terrible – and then blamed the transit agency for not running buses to their inaccessible site.

These cases are the result of a poor respect and understanding of transit as a background consideration in all urban development. Ultimately, they matter at least as much as the official TODs schemes do in determining the potential for transit in the cities of tomorrow.

If I could put one sentence about transit in the mind of every developer, every land use planner, indeed anyone who makes a decision about where to locate anything, the sentence would be this: Be on the Way. If you want to be sure you’ll have good transit, be on the way from one transit destination to another.

 

An efficient transit line – and hence one that will support good service – connects multiple points; but it’s also reasonably straight, so that it’s perceived as a direct route between any two points on the line. For that reason, good transit geography is any geography in which good transit destinations are on a direct path between other good transit destinations. (Obviously, this is not always a geometrically straight line; it may be a path defined by existing roads or rail corridors that everyone perceives as reasonably direct given the terrain.)

A bad geography is one that indulges in cul-de-sacs on any scale. It sets destinations a little back from the line, so that transit must either bypass them or deviate to them, where deviating means delaying all the other passengers riding through this point.

The same problem arises at many scales:

  • A person who lives at the end of a long cul-de-sac road complains that the bus doesn’t go by her house.
  • A small shopping centre or grocery store sets itself too far back from its street, even though the street is where the transit service is.
  • A university, hospital, business park or other campus-style development positions itself on a hill, often at the end of a road leading only to it, or on a road at the edge of the city where there is nothing further beyond it. This makes the institution look and feel important, but limits the possibilities for transit service because it can only be served by lines that end there.
  • An entire suburb, perhaps one called a Transit-Oriented Development, is located in such a way that no regionally logical transit line will ever get to its town centre, except for routes that go only there.

One of the major failings of Peter Calthorpe’s early 1990s project Laguna West, in Sacramento, is that the town centre is located in a place where no regionally logical transit line could ever serve it. Laguna West still has mediocre transit service because it’s impossible to combine its market with any other markets – which is what you have to do to create an efficient transit line.

Land use planners urgently need simple tools to catch these problems. Until those tools are developed and built into training, they’d do well to just remember one sentence: Be on the Way.

Jarrett Walker is an international consultant in public transit network design and policy, based in Portland, Oregon. He is also the author of  “Human Transit: How clearer thinking about public transit can enrich our communities and our lives".

This article was originally written for his blog, and is reposted here with permission. All images courtesy of the author.

 
 
 
 

The Delhi Metro: How do you build a transport system for 26m people?

Indraprastha station in 2006. Image: Getty.

“Thou hath not played rugby until thou hath tried to get onto a Delhi Metro in rush hour,” a wise Yogi once said.

If you’ve never been on New Delhi’s Metro, your mind might conjure up the the conventional image of Indian trains: tawdry carriages, buckets of sweat, people hanging out of windows and the odd holy cow wandering around for good measure.

Well, no. The Delhi Metro is actually one of the most marvellously sophisticated, affordable, timely, and practical public transportation systems out there. On a 45C day in the Indian summer, many a traveller has shed tears of joy on entering the spacious, air-conditioned carriages.

Above ground, Delhi is a sprawling metropolis of the scariest kind: 26m people, three times the population of London, churn and grind through Delhi itself.

The National Capital Region, an area which includes Delhi and its surrounding satellite cities – now victim of its never-ending urban sprawl – has an estimated population of almost 50m. So how do you tie such a huge population together?

The map; click to expand. Image: Delhi Metro Rail.

Motorised vehicles won’t do it alone. For one, air pollution is a horrific problem in Delhi, as it is across India. Last November, the government declared a state of emergency when the Indian capital was engulfed by a toxic, choking fog so thick that you could barely see several metres in front of you, drawing allusions to the great Victorian fogs in London.

Then there’s Delhi’s famous traffic. Twenty-five years ago, the travel writer William Dalrymple observed that you could reduce the Delhi’s road laws to one simple idea: the largest vehicle always had the right of way. The traffic has tamed somewhat in the 21st century, but the number of vehicles has multiplied again and again, and it’s not uncommon for people to be stuck in four-hour traffic jams when they try to traverse the mighty city.

Enter the Delhi Metro – a huge network of 164 over- and underground stations – and by any account, a titan of civil engineering and administration.

The numbers are simply colossal. Every day the metro serves on average almost 3m people. Annually, it carries around 1bn.

In a country where intercity trains still turn up a day late, the Delhi Metro is extraordinarily timely. On the major lines, trains will come every several minutes. The trains are extraordinary speedy, and you’ll reach your destination in a fraction of the time it would take for you to drive the distance.

The minimum fare is 10 rupees (12p); the maximum fare, to and from the airport, is 50 (60p).

The evolution of the metro. Image: Terramorphus/Wikimedia Commons.

Construction of the metro system began in 1998, with the first section completed in late 2002. Keen to avoid the catastrophic corruption and bureaucratic mismanagement which plagued eastern city of the Kolkata Metro, developers took advice from Hong Kong’s high-tech system There have been several stages of development to add extra lines; more is planned. By 2020, it is hoped that the 135 miles of line will have increased to over 300.  

One thing quite striking about the metro is its women’s only carriages at the rear and the front of the train, marked by pink signs. Sexual assault and harassment has been a horrific problem on Delhi’s transport systems. Women can of course go anywhere on the train – but men who violate the carriage system will have to deal with the scathing anger of the entire pink carriage.


One of the under-discussed impacts of widespread and well-used public transportation systems is their propensity to break down social and class barriers over time. As the London Tube began to be used more and more in early 20th century London, people from completely different walks of life and classes began to brush shoulders and share the same air.

The story is similar in Delhi. The necessity of the metro helps to break down old caste and class divisions. Of course, many elite Delhiites would not be seen dead on the metro, and choose their private chauffeur over brushing shoulders with the common man. But slowly and surely, the times are a changing.

What’s more, the Delhi Metro system is one of the greenest around. Six years ago, the Metro was the first railway system in the world to be awarded carbon credits from the United Nations for helping to reduce pollution in the capital by an estimated 640,000 tonnes every year.  

All praises sung and said, however, at peak times it’s less mind the gap and more mind your ribs – as a fifth of humanity seems to try to get on and off the train at once.

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