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Originally Posted by TakeFive
Urban Alert
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In deference to all my crazy-thinking urbanist friends it's worth acknowledging that RMI (formerly known as the Rocky Mountain Institute) has designed a NEW world-class ‘Induced Demand’ Calculator.
New ‘Induced Demand’ Calculator Shows Exactly How Much Driving Your City’s Highway Expansion Will Encourage
Oct 20, 2021 By Kea Wilson - Streetsblog USA
"decades of proven scientific literature"
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Other than saying this is a bunch of contrived nonsense that can't even pass a smell test, I'll forego any rant.
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Putting on my NPR Weekender Hat
I've got a Simple Math Puzzle begging to be solved.
Driving along the new expanded '101' Pima Freeway in my neck of the woods was like turning on a light. All it took was some simple math.
For SOV's, adding the 5th lane on each side of the freeway effectively doubled the throughput capacity (does not include any additional exit/enter lane). You have one week to submit your entrees.
The winning entry receives a classic dinner for two at a non-historic landmark.
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I've thought about this theory of "induced demand" and I don't think they take into account a population that is rising rapidly.
I grew up in KC and recall when they added lanes to I-35 and I-435 back in the '80s. They recently added another lane to 435. I have to travel there often (unfortunately) and the freeway traffic there is nothing compared to Denver. Rush hour is still just an hour, and not bad IMO. But here's the deal... their population hasn't risen that much since the '80s. It's a very steady, slow increase.
Then look at Denver. When I first moved to Denver in 1994, the population was 50% lower. When you increase the population this fast, you obviously need more capacity on freeways. Same thing in places like LA (where I spent 10 years). Population keeps going up and up, you increase capacity.
And then if "induced demand" were true and more lanes means people decide to drive on the freeways more often, then what, removing lanes is the solution? Then people would stay home?