Induced Demand
Critiquing the $1.9 Billion Project to Widen I-5 in Los Angeles County
Streetsblog slams Caltrans for wasting $1.9 billion on futile freeway widening projects.
What L.A.'s New Expo Line Extension Won't Do
The $1.5 billion, 6.6-mile light rail extension from Culver City to Santa Monica is projected to double trips on the line by 2030, giving commuters a viable alternative to driving. Just the same, don't expect the extension to reduce congestion.
Texas Highway Opens Shoulders to Drivers—Congestion Disappears
An experiment in Irving on SH 161 is defying the rules of induced demand, but not by building new lanes.
Trinity Parkway Would Raise Dallas-Area VMT by One Million Miles a Day
Pitched as a necessary addition to reduce congestion on interstates 30 and 35E as they pass Downtown Dallas, the Trinity Parkway is likely to induce one million additional vehicle miles traveled a day.
Connecticut Gov. Malloy Picks Sides in the Highway Widening Debate
Connecticut Governor Dan Malloy sees potential benefits in economic development and congestion reduction in a pair of highway widening proposals in his state.
Congestion as an Economic—Not an Engineering—Problem
Thinking about congestion as an economic problem generates new solutions for the problem as well as a response to accusations of social engineering.
When a Freeway Goes Bad
At some point, in places all over the country, freeways stopped working as they were intended. What can be done to improve one of the great frustrations of life with a car?
Too Big for Texas? Houston's 23-Lane Freeway
After a $2.3 billion widening project, traffic once again chokes the Katy Freeway's 23 lanes. For road spending critics who are also taxpayers, this I-told-you-so moment is bittersweet.
Does Peak Car Mean the End of Induced Demand?
Aaron Renn provides a dissenting argument on the implications of peak car, namely, "if we’ve really reached peak car, maybe we really can build our way out of congestion after all."
Induced Demand Explained (or Why We Can't Build Our Way Out of Congestion)
In case you need an easy link to reference when encountering arguments in favor of widening roads and freeways as a solution for traffic, Adam Mann provides an accessible and clear explainer article that sums up the limitations of such strategies.
Study Says Induced Traffic Effect Too Often Ignored
Despite many studies confirming the effect of induced traffic, the effect is often ignored in the transport models used for project appraisal, says a team of Scandanavian researchers creating an extreme bias in the assessment of new projects.
Explaining Induced Traffic
Eric Jaffe at The Infrastructurist explains the non-intuitive reason why often removing freeways means less traffic.
The Vicious Cycle of Adding Capacity for Cars
Dan Bertolet argues that adding expanding car capacity in cities just inspires more people to drive and ruins the qualities that make the city attractive in the first place.
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City of Albany
UCLA Lewis Center for Regional Policy Studies
Mpact (formerly Rail~Volution)
Chaddick Institute at DePaul University
City of Piedmont, CA
Great Falls Development Authority, Inc.
HUDs Office of Policy Development and Research
