The latest project out of MIT's Senseable City Lab examines the "sensing power of taxis" in various cities around the world. Looking at traffic data, they determined how many circulating taxis you would need to equip with sensors if you wanted to capture comprehensive street data across a particular city. This might be useful if you wanted to measure things like air quality, weather, traffic patterns, road quality, and so on.
What they found is that the sensing power of taxis starts out unexpectedly high. It would only take 10 taxis to cover 1/3 of Manhattan's streets in a single day. However, because taxis tend to have convergent routes, they also discovered rapid diminishing returns. It would take 30 taxis (or 0.3% of all taxi trips) to cover half of Manhattan in a day, and over 1,000 taxis to cover 85% of it. A similar phenomenon was observed in the other cities that they studied: Singapore, Chicago, San Francisco, Vienna, and Shanghai.
However, if you look at the percentage of trips needed to scan half of the streets in a city, Manhattan has the lowest rate at 0.3%. Vienna is the highest at 9%. But I'm not sure if this is a function of the utilization rate of their taxis or if it has something to do with urban form. Singapore has a similarly low rate (0.44%), but its street grid looks nothing like that of New York's.
The latest project out of MIT's Senseable City Lab examines the "sensing power of taxis" in various cities around the world. Looking at traffic data, they determined how many circulating taxis you would need to equip with sensors if you wanted to capture comprehensive street data across a particular city. This might be useful if you wanted to measure things like air quality, weather, traffic patterns, road quality, and so on.
What they found is that the sensing power of taxis starts out unexpectedly high. It would only take 10 taxis to cover 1/3 of Manhattan's streets in a single day. However, because taxis tend to have convergent routes, they also discovered rapid diminishing returns. It would take 30 taxis (or 0.3% of all taxi trips) to cover half of Manhattan in a day, and over 1,000 taxis to cover 85% of it. A similar phenomenon was observed in the other cities that they studied: Singapore, Chicago, San Francisco, Vienna, and Shanghai.
However, if you look at the percentage of trips needed to scan half of the streets in a city, Manhattan has the lowest rate at 0.3%. Vienna is the highest at 9%. But I'm not sure if this is a function of the utilization rate of their taxis or if it has something to do with urban form. Singapore has a similarly low rate (0.44%), but its street grid looks nothing like that of New York's.
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
Yesterday my friend Darren Davis out of Auckland introduced me to a 3-part blog series that he recently did with Andreas Lindinger out of Vienna, which looked at pedestrian zones and shared spaces across these two cities.
Compared to both Auckland and Vienna, Toronto is behind when it comes to pedestrian zones and shared spaces. So it’s interesting to see how other cities have managed to pull it off. It’s also further proof that you don’t have to be a warm climate city to have amazing public spaces.
Image: Vienna via Vienncouver (notice the cars and pedestrians mixed in)
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
Yesterday my friend Darren Davis out of Auckland introduced me to a 3-part blog series that he recently did with Andreas Lindinger out of Vienna, which looked at pedestrian zones and shared spaces across these two cities.
Compared to both Auckland and Vienna, Toronto is behind when it comes to pedestrian zones and shared spaces. So it’s interesting to see how other cities have managed to pull it off. It’s also further proof that you don’t have to be a warm climate city to have amazing public spaces.
Image: Vienna via Vienncouver (notice the cars and pedestrians mixed in)
