If you don’t follow the work of MIT’s Senseable City Lab, I highly recommend that you start.
Earlier this year, researchers from the Massachusetts Institute of Technology, the Swiss Institute of Technology, and the Italian National Research Council developed something that they call “slot-based intersections.” In a world where cars have sensors and drive themselves, it is intended as a more efficient alternative to traditional intersections. Goodbye traffic lights.
Much like air-traffic control, the way the system works is by assigning individualized time slots to each car for when they may enter an intersection. For example, in the diagram below (Sequence 01) the car approaching from the bottom left (#10) has a “stop distance slot” in front of it reserved for 3 of the cars that are currently in the intersection. The two that are traveling perpendicular to it and the car currently turning left into the same lane as #10 (on the other side of the intersection). The car in the midst of turning right (#5) is exempt because there’s no possibility of collision.
In Sequence 02 (below) you can see that car #10 is now turning left, which means it has its own time slot in the intersection. Other approaching cars now have a “stop distance slot” dependent on car #10.
In all cases, cars making a right turn are able to move freely, provided they will not interfere with any other cars.
The researchers estimate that real-time slot allocation might double the number of vehicles that a traditional traffic-light intersection can handle today and, in some cases, it might completely eliminate stop and go traffic.
Often when I write about self-driving vehicles I hear people tell me that cars are still cars. It doesn’t matter whether they are self-driving or not. The same inefficiencies apply. They are not the solution to urban gridlock. Elon Musk was also criticized (following his Master Plan) for not properly understanding urban geography.
But self-driving cars will create new efficiencies. I am not saying that they are a silver bullet, but I am saying that they will help a great deal. I don’t think that anyone truly understands the extent of these efficiencies, but there are a myriad of possibilities. This Senseable City Lab project is a perfect example.
What I am grappling with right now is the relationship between self-driving vehicles and traditional forms of public transit. Until we get a handle on the efficiencies and overall impact, it’s hard to ascertain how these different forms of mobility will work together. My gut tells me that the lines are bound to get blurry and that self-driving “cars” will feel less and less like the cars we know today.
Below is a video that was published along with the research. If you can’t see it, click here.
[youtube https://www.youtube.com/watch?v=4CZc3erc_l4?rel=0&w=560&h=315]
Right now, there’s an apartment building in San Francisco that is trying to encourage car-free living by offering residents a $100 per month credit that can be used for Uber and/or for public transit. Prospective residents can even get a $20 credit to go check out the community. (The program is a partnership with Uber.)
The reason this leasing strategy caught my attention is because we’re at a point where city builders are now trying to recalibrate themselves to this new emerging world.
When I was at the Land & Development conference earlier this month, one developer brought up this exact point. He more or less asked: If you’re starting development on a new building today and you’re expecting approvals in 2 or so years and completion in another 3 or 4 years, what do you think the state of cars/driving will be at that point? Should you really be building all that underground parking?
These are great question. And they highlight one of the challenges of development. It takes a long time to bring new supply to the market and a lot can change during that time period. My sense is that we are pretty clearly seeing downward pressure on driving and car ownership.
That said, this isn’t the case in every city or in all parts of a particular city. I just got back from a trip to a Detroit where it’s pretty hard to imagine the city being oriented around anything but the car. But in cities like San Francisco and Toronto, car-free living is already a reality for many people and so we need to respond to that.
How do you see yourself driving, or not driving, in the next 5 to 10 years?
If you don’t follow the work of MIT’s Senseable City Lab, I highly recommend that you start.
Earlier this year, researchers from the Massachusetts Institute of Technology, the Swiss Institute of Technology, and the Italian National Research Council developed something that they call “slot-based intersections.” In a world where cars have sensors and drive themselves, it is intended as a more efficient alternative to traditional intersections. Goodbye traffic lights.
Much like air-traffic control, the way the system works is by assigning individualized time slots to each car for when they may enter an intersection. For example, in the diagram below (Sequence 01) the car approaching from the bottom left (#10) has a “stop distance slot” in front of it reserved for 3 of the cars that are currently in the intersection. The two that are traveling perpendicular to it and the car currently turning left into the same lane as #10 (on the other side of the intersection). The car in the midst of turning right (#5) is exempt because there’s no possibility of collision.
In Sequence 02 (below) you can see that car #10 is now turning left, which means it has its own time slot in the intersection. Other approaching cars now have a “stop distance slot” dependent on car #10.
In all cases, cars making a right turn are able to move freely, provided they will not interfere with any other cars.
The researchers estimate that real-time slot allocation might double the number of vehicles that a traditional traffic-light intersection can handle today and, in some cases, it might completely eliminate stop and go traffic.
Often when I write about self-driving vehicles I hear people tell me that cars are still cars. It doesn’t matter whether they are self-driving or not. The same inefficiencies apply. They are not the solution to urban gridlock. Elon Musk was also criticized (following his Master Plan) for not properly understanding urban geography.
But self-driving cars will create new efficiencies. I am not saying that they are a silver bullet, but I am saying that they will help a great deal. I don’t think that anyone truly understands the extent of these efficiencies, but there are a myriad of possibilities. This Senseable City Lab project is a perfect example.
What I am grappling with right now is the relationship between self-driving vehicles and traditional forms of public transit. Until we get a handle on the efficiencies and overall impact, it’s hard to ascertain how these different forms of mobility will work together. My gut tells me that the lines are bound to get blurry and that self-driving “cars” will feel less and less like the cars we know today.
Below is a video that was published along with the research. If you can’t see it, click here.
[youtube https://www.youtube.com/watch?v=4CZc3erc_l4?rel=0&w=560&h=315]
Right now, there’s an apartment building in San Francisco that is trying to encourage car-free living by offering residents a $100 per month credit that can be used for Uber and/or for public transit. Prospective residents can even get a $20 credit to go check out the community. (The program is a partnership with Uber.)
The reason this leasing strategy caught my attention is because we’re at a point where city builders are now trying to recalibrate themselves to this new emerging world.
When I was at the Land & Development conference earlier this month, one developer brought up this exact point. He more or less asked: If you’re starting development on a new building today and you’re expecting approvals in 2 or so years and completion in another 3 or 4 years, what do you think the state of cars/driving will be at that point? Should you really be building all that underground parking?
These are great question. And they highlight one of the challenges of development. It takes a long time to bring new supply to the market and a lot can change during that time period. My sense is that we are pretty clearly seeing downward pressure on driving and car ownership.
That said, this isn’t the case in every city or in all parts of a particular city. I just got back from a trip to a Detroit where it’s pretty hard to imagine the city being oriented around anything but the car. But in cities like San Francisco and Toronto, car-free living is already a reality for many people and so we need to respond to that.
How do you see yourself driving, or not driving, in the next 5 to 10 years?
Thanks to my friend Darren Davis, I just recently learned about something called The Lee Kuan Yew World City Prize. Named after Singapore’s first Prime Minister, the prize is a biennial award that honors cities who have made, “outstanding achievements and contributions to the creation of liveable, vibrant and sustainable urban communities around the world.” Along with the prize comes $300,000 (Singapore Dollars), which is about $287,000 Canadian as of today. The 2016 Prize Laureate is Medellín, Colombia. Over the past two decades, the city has transformed itself from one of the most dangerous cities in the world to one that has become a model for social inclusion and urban innovation. Here is a video that talks about the transformation. It’s a bit cheesy, but it does provide a high-level overview of their urban initiatives. A lot of them will serve as a reminder about the importance of urban connectivity. If you’re a regular reader of this blog, you may also remember that my good friend Alex Feldman (VP at U3 Advisors) wrote a guest post about Medellín after he visited the city for the World Urban Forum almost two years ago. That post was called, What cities could learn from Medellín. It’s worth mentioning that the runners-up for this year’s World City Prize were Auckland, Sydney, Toronto, and Vienna. In the case of Toronto, our “far-from-ideal transit” was specifically called out as a negative. Thankfully we are now working on road pricing, which will provide additional funding for transit. ;) Image by Jorge Gobbi
Thanks to my friend Darren Davis, I just recently learned about something called The Lee Kuan Yew World City Prize. Named after Singapore’s first Prime Minister, the prize is a biennial award that honors cities who have made, “outstanding achievements and contributions to the creation of liveable, vibrant and sustainable urban communities around the world.” Along with the prize comes $300,000 (Singapore Dollars), which is about $287,000 Canadian as of today. The 2016 Prize Laureate is Medellín, Colombia. Over the past two decades, the city has transformed itself from one of the most dangerous cities in the world to one that has become a model for social inclusion and urban innovation. Here is a video that talks about the transformation. It’s a bit cheesy, but it does provide a high-level overview of their urban initiatives. A lot of them will serve as a reminder about the importance of urban connectivity. If you’re a regular reader of this blog, you may also remember that my good friend Alex Feldman (VP at U3 Advisors) wrote a guest post about Medellín after he visited the city for the World Urban Forum almost two years ago. That post was called, What cities could learn from Medellín. It’s worth mentioning that the runners-up for this year’s World City Prize were Auckland, Sydney, Toronto, and Vienna. In the case of Toronto, our “far-from-ideal transit” was specifically called out as a negative. Thankfully we are now working on road pricing, which will provide additional funding for transit. ;) Image by Jorge Gobbi
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