viernes, 25 de septiembre de 2009

Articulo: Transformative Public Works






The remarkable, four-year revitalization of Medellín has become a model for cities around the world. The construction of visually striking libraries, schools, parks and science and cultural centers in some of the city’s most impoverished neighborhoods, has turned Medellín, once considered the deadliest city in the world, into a thriving, livable urban hub.

Beginning in 2004, a team of renowned architects led by Alejandro Echeverri, former director of urban projects, and Sergio Fajardo, former mayor, implemented this initiative in consultation with local neighborhood residents. Together, Echeverri and Fajardo, as well as an extensive team of architects and technicians, helped champion and realize this cornerstone belief: “Our most beautiful buildings must be in our poorest areas,” as expressed by Fajardo.

Paired with sweeping social programs, including education and micro-lending to small businesses, these projects helped rout the city’s deeply entrenched social inequalities. “From the beginning, we involved the people in the activity of using public spaces to solve social problems and to change the lives of the community,” said Echeverri.

A number of these projects have become landmarks of the city, including the Orquideorama, a 42,200-square-foot structure whose defining feature is a soaring, fractal-like canopy of wood-framed hexagons that shelters the Botanic Garden’s orchid collection and houses cultural events. One of the Medellín’s most visited attractions is the iconic Parque Biblioteca España, which resembles three massive, etched black boulders and is perched in the hilltops of Santo Domingo, a barrio once notorious for drug violence.

In 2004, the design process helped extend the city’s modern railway system by building an elevated gondola tramway that connects some of Medellín’s poorest and most isolated neighborhoods to the rest of the city. Today, residents from the sprawling hillside slums of cinderblock shacks have more opportunities to take advantage of schools and the growing construction, textile, and tourism economies of the city.

These architectural and urban projects have “changed the skin of the city,” in Farjardo’s words. A guiding principle of these public works projects was el efecto demonstrativo, or using the “power of example” –- in this case, the dramatic symbolism of modern architecture -- to instill a sense of pride and possibility in the minds of local residents and beyond.

Echeverri and Fajardo’s social programs and their faith in the galvanizing power of design and architecture has been credited for contributing to a decline in crime. According to national statistics, the number of homicides dropped from a peak of 381 for every 100,000 inhabitants in 1991 to 29 in 2006.

Leaders worldwide have taken note. Today, both men are in high demand to speak at conferences throughout Latin America, Europe and elsewhere, as advisors to governments in cities such as Caracas, Guadalajara and Lima, Peru who view Medellín’s transformation as a possible blueprint for charting the future of their own communities.

Quote

“Our most beautiful buildings must be in our poorest areas.”
- Sergio Fajardo

Articulo: The Infrastructure of Place: Sustainability and the Built Environment

On the third day of the Clinton Global Initiative Annual Meeting, experts came together to discuss “The Infrastructure of Place: Sustainability and the Built Environment,” as moderated by Vijay Vaitheeswaran, global correspondent for The Economist and co-author of ZOOM: The Global Race to Fuel the Car of the Future.

“More than half of people are living in urban clusters, mainly in mega-cities of the developing world,” Vaitheeswaran said. “What if the patterns of urbanization are not along the most sustainable trajectories? There is a choice to be made about how that trajectory will be formed.”

To paraphrase the overarching question: Will growing cities, especially developing cities, “leapfrog to a new paradigm” of energy efficiency and sustainable transportation? Or will they stick with “business-as-usual,” adopting the same policies formed in the developed world that have “outlived their usefulness”?

Conference organizers explained the theme of the seminar in this way:

Cities are bustling centers of economic activity, innovation, and intellectual capital – and they rely on infrastructure to function. Rethinking and reinvesting in the underpinnings of urban development, land use, and transportation can set the stage for a new wave of economic prosperity that reverses old patterns of waste and inequality. Much of tomorrow’s infrastructure is already standing today, and many of our current buildings pollute and consume massive amounts of energy. Rebuilding communities to meet energy and environmental challenges, and to manage the press of urbanization in the developing world, can be a source of jobs and consumer savings while improving long-term sustainability. This session will look at innovative approaches to the modern city, public transportation, financing energy efficiency, and restoring economic opportunity.

PROGRAM PARTICIPANTS:

Ritt Bjerregaard, Lord Mayor of Copenhagen
Nancy Kete, Director, EMBARQ – The WRI Center for Sustainable Transport
Clay Nesler, Vice President, Global Energy and Sustainability, Johnson Controls Inc.
Albina Ruiz, Executive Director, Ciudad Saludable
Ron Sims, Deputy Secretary, Department of Housing and Urban Development

PEOPLE FIRST

EMBARQ Director Nancy Kete urged cities to consider people first — cars second — when creating a sense of place. Too often, she said, cities have “passively decided to create themselves in the image of a car,” with urban areas that look like parking lots, and highways and freeways acting as “sewers for cars.”

“Does this mean having no cars? No,” Kete added. “But does it mean having different kinds of cars? Yes.” She emphasized the need for cities to provide infrastructure that encourages people to walk, bike, use public transit and drive small vehicles.

Kete also highlighted the success stories of cities in Asia, like Tokyo, Hong Kong, Singapore and Seoul, where the leadership made an early decision to prioritize public transportation, before private car use had a chance to become the preferred luxury mode of travel. “[Public transportation] never became a mode of last resort,” she said, alluding to the negative associations that some people have about mass transit being low-prestige and inconvenient. “Taking transportation doesn’t have to be the thing that only the poor do.”

With her experience as Lord Mayor of Copenhagen, a city known for its bicycling culture, Ritt Bjerregaard maintained that “rich people are not necessarily choosing cars” because of physical health reasons. She said about 40 percent of all commuters in her city ride to work by bike, and it has to do with the city being able and willing to provide safe and secure cycling paths, unlike in chaotic cities like New York, where Bjerregaard said she wouldn’t dare attempt to bike around (even though the Department of Transportation is starting to respond to the traffic problems with better cycling lanes and pedestrian-only spaces.) “You have to give people other choices and good choices,” Bjerregaard added. “Many of them would prefer to choose it.”

Kete noted that sustainable, active forms of transportation like bicycling also offer mental and emotional benefits. According to one study in Bristol, UK, she said, “people who live on busy streets have 75 percent fewer friends than poeple who don’t.” (See a previous post on TheCityFix about this.)

INTEGRATED SOLUTIONS

One of the themes that arose was the need for “systems thinking,” i.e. you can’t think about transportation without thinking about land use or energy or public spaces or air quality standards or other urban infrastructure requirements.

For example, when it comes to electric vehicles, Clay Nesler said, you have to think about the entire battery management system. You have to answer questions like, how do you connect to a smart grid so that batteries aren’t being charged on a hot day at 4 p.m. in the south (and thus wasting energy)? Also, how do cities use the excess energy that’s being stored in the batteries?

Dealing with these issues involves a chicken-and-egg dilemma, Nesler said. First, you need the building codes that will support electric vehicle technology (i.e. charging stations). You also need to incentivize the purchase of electric and hybrid vehicles, in the first place, to necessitate those new building code regulations.

Nesler praised the Mexico City government for its “green mortgage” program to promote sustainable building. The city has always had strict building codes, he said, but they were not enforced. The new program actually provides incentives by offering better mortgages to homes that are more energy efficient (with things like better windows and insulation.)

LOCAL INNOVATION

How do you ensure that infrastructure solutions are not implemented as a one-size-fits-all, top-down approach?

Ron Sims says the federal government can only play a role in establishing things like performance standards and goals. But it will really take innovation at the neighborhood and entrepreneurial level to create change. He said it would take a two-pronged approach to integrate sustainable transportation and urban development. First, the government should provide grant funding to stimulate new projects (under a “micro-financing” model.) And there should also be an attempt to leverage existing markets through economic incentives to encourage more sustainable building and transportation (like in Mexico City.)

At the end of the seminar, the audience split into discussion groups to talk about different subjects areas: energy efficiency, transportation, carbon and climate policy, renewable grid technology, and urban eco-systems. Kate Gordon, vice-president for energy policy at the Center for American Progress, made some very good summarizing points.

The conversation, she said of her group, was less about fuel use and more about vehicle miles traveled, smart growth and density. “Shouldn’t we not be talking about how to better travel, but instead, how not to travel?” she asked. For example, how can video technology and teleconferencing be scaled up to lessen long, unnecessary commutes?

Also, she said, designing smarter cities is not just about better cars and roads; it’s about densification to encourage less movement overall. This could be achieved through energy-efficient “green mortgage” programs, tighter building codes, urban agriculture, and better multi-modal transportation. For example, she said, bicycles should be thought of as part of a transportation system, “rather than a boutique-y thing that seems cool in Europe.” And what about the idea of capitalizing the costs of choices that people make with their own personal transportation? For example, like giving a $100 credit at the beginning of each year and allowing people to choose between spending it on parking (expensive) or on mass transit (economic.)

In the end, transportation was discussed as something tied to other things, like health and housing and energy.

“The U.S. transportation bill is coming up for re-authorization,” Gordon reminded us. “How do we incorporate these ideas into the bill so that it’s not just a highway bill again, so it’s about bigger choices?”

miércoles, 23 de septiembre de 2009

Articulo: It's Time To Rip Out The Stop Signs And Stop Blaming Cyclists

It's Time To Rip Out The Stop Signs And Stop Blaming Cyclists
by Lloyd Alter, Toronto on 09.23.09
CARS & TRANSPORTATION
link ( http://www.treehugger.com/files/2009/09/time-to-rip-out-stop-signs.php )

BUZZ UP!

Lloyd Alter

Many years ago the residents of this residential street were upset about speeding cars. They went to their city councillor, who managed to get some stop signs added to control traffic. The lots were not that deep on the cross streets, so there is now a stop sign every 266 feet. It was perhaps the first use of 4 way stops for speed control, but not the last; now every intersection in Toronto is signed this way.

Whenever I write a post about cycling, inevitably there will be comments that cyclists don't respect the rules and should stop at stop signs. Even our own April says so. But what is the purpose of those signs, on a quiet residential street? I am surprised that the cars pay any attention to them, let alone the cyclists.



Many years later, the City introduced speed bumps, or as they are sometimes endearingly called in the Caribbean, "sleeping policemen." They do much the same job of controlling traffic speed, but you don't stop and start if driving, using a lot less fuel, and they don't impede cyclists, who are supposedly an important part of the transportation system now.

There is some evidence as well that stop signs don't even work. According to the Institute of Traffic Engineers,

An unwarranted STOP sign installation reduces speed only immediately adjacent to the sign. In most cases, drivers accelerate as soon as possible, to a speed faster than they drove before STOP signs were installed. They do this apparently to make up for time lost at the STOP sign. STOP signs are not effective for speed control.
They are also responsible for increased fuel consumption, maintenance costs, pollution and noise. Speed bumps are also responsible for more maintenance costs if you go too fast, but are designed so that if you go the speed limit, you sail over them.



It is ridiculous to complain about bikes going through stop signs when the system was designed to control cars. Fix it so that it works for both, saving fuel for drivers and ending this whine that bikes don't obey the rules when the rules were not written for bikes.

martes, 22 de septiembre de 2009

Quote

"Reasonable people adapt themselves to the world. Unreasonable people attempt to adapt the world to themselves. All progress, therefore, depends on unreasonable people"
George Bernard Shaw
Sent from my BlackBerry® smartphone

domingo, 20 de septiembre de 2009

What is Personal Rapid Transit?

ULTRA

ULTra is a battery-driven, 200-mpg-equivalent, elevated personal rapid transit system with many four-person vehicles. First deployment is scheduled for London Heathrow Airport in Spring 2010, to serve Heathrow's new Terminal 5. Working as circulator transit for airports, office parks, universities, and other major activity centers, ULTra is faster than a car. In these applications, ULTra solves the "last mile problem."
16 web pages of details on Heathrow ULTra PRT can be found at: http://www.ultraprt.com/

BAA (formerly British Airports Authority) is a private-sector firm that owns and operates 7 airports including London Heathrow, the world's third largest. The Heathrow ULTra system construction and operating costs are funded by BAA. This transit system is not government-subsidized.

Video:ULTra PRT sustainable transit 2