I'm not an expert when it comes to roads and highways. I mean, usually we talk about bike lanes around here. But today I learned, via Brian Potter over at Construction Physics, that there is such a thing as an International Roughness Index (or IRI). In simple terms, it measures how much a car bounces up and down over a given distance of driving, and it is usually expressed in units like "millimeters per meter." A low IRI is good. It means less bouncing up and down. And a high IRI is bad. It means more bouncing up and down, suggesting the road is poor. This, it turns out, is the most commonly used index in the world for evaluating whether a road sucks or not.

And in this recent post, Brian uses the index to chart out road quality across the US. Here's non-interstate roads for the 19 largest metro areas:

This is an interesting video by Phil Andrews of Maxinomics talking about the economics of Uber and what it could stand to gain from autonomous vehicles.

As part of this, he touches on the exclusive partnership that was announced between Uber and Waymo back in September. That was a big deal.

I find this topic fascinating because it's hard to imagine it not reshaping the landscape of our cities. And it continues to get more real by the day.

I first wrote about Manhattan's proposed congestion charge back in 2018. Naturally, some people supported it and some people opposed it. Four years later, it was reported that the charge was still being considered for the area of the island south of 60th Street, and that it could generate an additional $1 billion in revenue for the city's transportation authority. But then in June of this year, right before the charge was set to come into effect on June 30, 2024, New York Governor Kathy Hochul said "nah, let's pause this indefinitely." And at that point, it felt mostly dead.

Nope: A revised tolling plan has just been announced -- the charge has been reduced from $15 to $9 -- and Hochul is now trying to jam it through before Trump takes office in January. Trump opposes the charge and has branded it the "most regressive tax known to womankind", so there's a real deadline here. This could get interesting. Do you think it will actually happen, some 6 years later? (In reality, the timeline is far longer. Congestion pricing also looked promising during the Bloomberg era, but then similarly died. And I'm sure there were even earlier proposals.)

I'm not an expert when it comes to roads and highways. I mean, usually we talk about bike lanes around here. But today I learned, via Brian Potter over at Construction Physics, that there is such a thing as an International Roughness Index (or IRI). In simple terms, it measures how much a car bounces up and down over a given distance of driving, and it is usually expressed in units like "millimeters per meter." A low IRI is good. It means less bouncing up and down. And a high IRI is bad. It means more bouncing up and down, suggesting the road is poor. This, it turns out, is the most commonly used index in the world for evaluating whether a road sucks or not.

And in this recent post, Brian uses the index to chart out road quality across the US. Here's non-interstate roads for the 19 largest metro areas:

This is an interesting video by Phil Andrews of Maxinomics talking about the economics of Uber and what it could stand to gain from autonomous vehicles.

As part of this, he touches on the exclusive partnership that was announced between Uber and Waymo back in September. That was a big deal.

I find this topic fascinating because it's hard to imagine it not reshaping the landscape of our cities. And it continues to get more real by the day.

I first wrote about Manhattan's proposed congestion charge back in 2018. Naturally, some people supported it and some people opposed it. Four years later, it was reported that the charge was still being considered for the area of the island south of 60th Street, and that it could generate an additional $1 billion in revenue for the city's transportation authority. But then in June of this year, right before the charge was set to come into effect on June 30, 2024, New York Governor Kathy Hochul said "nah, let's pause this indefinitely." And at that point, it felt mostly dead.

Nope: A revised tolling plan has just been announced -- the charge has been reduced from $15 to $9 -- and Hochul is now trying to jam it through before Trump takes office in January. Trump opposes the charge and has branded it the "most regressive tax known to womankind", so there's a real deadline here. This could get interesting. Do you think it will actually happen, some 6 years later? (In reality, the timeline is far longer. Congestion pricing also looked promising during the Bloomberg era, but then similarly died. And I'm sure there were even earlier proposals.)