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Brandon Donnelly — Daily insights for city builders. Published since 2013 by Toronto-based real estate developer Brandon Donnelly. — Page 970

Minimum fleet

  • Autonomous-vehicles
  • Driving
  • Mit

Here is an interesting study by the MIT Senseable City Lab , which looks at: “the minimum number of vehicles needed to serve all the trips in New York without delaying passengers’ pick up times.” If you can’t see the embedded video below, click here .

[youtube https://www.youtube.com/watch?v=nFo64kBGF6o&w=560&h=315]

This is interesting because it begins to quantify the amount of waste running through the system today and the possible efficiencies brought about by autonomous vehicles. In this model, the current taxi fleet in NYC could be reduced by 40%.

For more on the study, go here .

Portland is considering whether to solve traffic congestion

  • Chris-hagerbaumer
  • Cities
  • City-observatory

Chris Hagerbaumer is the deputy director of the Oregon Environmental Council. She recently delivered the below testimony on “variable traffic-based tolls”, a form of road pricing. This is something we have talked a lot about here on the blog. 

Oregon is currently looking at implementing this on two freeways in Portland, which is why Chris delivered this testimony. And as many of you know, I am very much in support of this demand management approach. So here you are: why congestion pricing makes sense for Portland (taken from City Observatory).

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The question in front of you is: how do we actually solve congestion, solve it in a way that is the least cost to the taxpayer, and in a way that doesn’t result in more pollution. When we add more supply (in other words, build more roads) we end up exactly where we started when it comes to congestion (due to induced demand), we spend billions of taxpayer dollars (much of which comes from drivers who aren’t the ones demanding more road space), we harm surrounding communities as highways encroach into neighborhoods, and we pollute the air and heat up the planet.

Induced demand is the fact that when you add freeway capacity it induces longer trips, more sprawl and more driving. Traffic is like a gas, expanding to fit whatever space there is. In one infamous example, Texas spent nearly $2.8 billion expanding Katy Freeway to 26 lanes and congestion has actually worsened.

Building new roads is a supply-side solution that simply doesn’t work.

An effective, least-cost, environmentally sound way to address congestion is the proposal before you: congestion pricing to manage demand. Drivers pay an automated fee to enter highly congested roads at peak hours; in return, they travel smoothly and reliably, getting where they need to go on time. Prices are set at the lowest possible level to free up just enough road space to eliminate bottlenecks.

When you eliminate bottlenecks and get traffic flowing freely, you have—in essence—added capacity. You no longer need to add new lanes, you save taxpayers a bundle, and you reduce dangerous auto and truck exhaust.

Congestion pricing is a demand management solution that’s proven to work and does so in cities around the world. Drivers opposed congestion pricing at first: no one wants to pay more. But that opposition of 60% or more turned into support of 60% or more after congestion pricing was implemented. People’s opposition turned to support because they now get that it works—they experience the value.

Equitable application of congestion pricing absolutely requires mitigating diversion to local streets. But note that congestion pricing actually pulls many drivers who were already cutting through local roads back to the highway because those drivers who were stuck in traffic now have an option to get where they need to go, on time, for a small price.

Equitable application of congestion pricing also requires significantly increasing transit service and other travel options in the corridor and considering other means to make the system work for low-income commuters who must drive during peak hours, such as targeted discounts or exemptions.

We think of highways as free and we think of driving as freedom, but by investing almost solely in infrastructure for cars over most of the 20th century and into the 21st century, we created a transportation system that is costly not only for our pocketbooks, but for our very health and wellbeing and our region’s economic prosperity, a transportation system that contributes to the existential risk of runaway climate change.

You have an opportunity to make a decision that will lead to less time stuck in traffic, healthier air, and more economic prosperity for the region and state. We hope you embrace that opportunity.

Photo by Zach Savinar on Unsplash

Cover image for Twin Palms turns 60

Twin Palms turns 60

  • Architecture
  • California
  • Desert

2018 marks the 60th anniversary of the Twin Palms neighborhood in Palm Springs, California , and Houzz has just published an excellent story describing the subdivision’s history and its importance for mid-century modern architecture.

Designed by architect William Krisel  and developed by Alexander Construction, the community was initially built with 90 homes. Supposedly each lot was exactly 10,000 square feet and each house had the exact same 40′ x 40′ square floor plan. So 1,600 sf homes.

In addition to this, each lot had a carport, an open courtyard connecting the house and carport, and a swimming pool. 

Unlike some of his contemporaries, Krisel was less interested in building one-off homes for the wealthy. He was more interested in tract housing for the masses. And standardizing the plans was one way to achieve greater affordability.

Krisel still found other creative ways to differentiate the homes, namely by rotating the square floor plan and by rearranging the carport, courtyard, and pool.

He also employed different rooflines, all of which have become emblematic of this era of architecture and of Palm Springs in general. It was about optionality on top of and around the box.

If you have a few minutes, check out the Houzz article . The homes are beautiful and the story is compelling: the modern American dream at an affordable price.

Photo by Nainoa Shizuru on Unsplash

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Daily insights for city builders. Published since 2013 by Toronto-based real estate developer Brandon Donnelly.