Cooking the Books: How IBR used “Post-Processing” to alter the Metro Model To hear project officials tell it, traffic projections emerge from the immaculate and objective Metro "Kate" traffic model But in reality, IBR traffic projections are not the outputs of the Kate travel demand model. Ins... → By Joe Cortright 29.10.2024 Discussion |
Moving the goalposts: Redefining traffic congestion IBR re-wrote the definition of congestion to make I-5 traffic look worse For decades, Oregon DOT has defined traffic congestion as freeway speeds below 35 MPH. Now, for the Interstate Bridge project, IBR has moved th... → By Joe Cortright 21.10.2024 Discussion |
They’re digging in the wrong place The Interstate Bridge Project proposes spending $7.5 billion to widen I-5, but misses the real bottleneck. A new, independent analysis by national traffic expert Norm Marshall of Smart Mobility, Inc., shows that the pro... → By Joe Cortright 23.10.2024 Discussion |
Inventing millions of phantom trucks to sell a wider bridge The $7.5 billion plan to widen the I-5 bridges across the Columbia River is being sold, in part, based on claims that it will be used by millions of phantom trucks. Metro's biased truck modeling over-states current ... → By Joe Cortright 28.10.2024 Discussion |
IBR: Forecasting the impossible The case for the $7.5 billion Interstate Bridge Replacement project is based on deeply flawed traffic models that ignore the bridge's capacity limits, and predict plainly unrealistic levels of traffic growth if the bridge ... → By Joe Cortright 16.10.2024 Discussion |
Cooking the Books: How IBR used “Post-Processing” to alter the Metro Model
To hear project officials tell it, traffic projections emerge from the immaculate and objective Metro "Kate" traffic model But in reality, IBR traffic projections are not the outputs of the Kate travel demand model. Ins... →
Discussion
|Moving the goalposts: Redefining traffic congestion
IBR re-wrote the definition of congestion to make I-5 traffic look worse For decades, Oregon DOT has defined traffic congestion as freeway speeds below 35 MPH. Now, for the Interstate Bridge project, IBR has moved th... →
Discussion
|They’re digging in the wrong place
The Interstate Bridge Project proposes spending $7.5 billion to widen I-5, but misses the real bottleneck. A new, independent analysis by national traffic expert Norm Marshall of Smart Mobility, Inc., shows that the pro... →
Discussion
|Inventing millions of phantom trucks to sell a wider bridge
The $7.5 billion plan to widen the I-5 bridges across the Columbia River is being sold, in part, based on claims that it will be used by millions of phantom trucks. Metro's biased truck modeling over-states current ... →
Discussion
|IBR: Forecasting the impossible
The case for the $7.5 billion Interstate Bridge Replacement project is based on deeply flawed traffic models that ignore the bridge's capacity limits, and predict plainly unrealistic levels of traffic growth if the bridge ... →
Discussion
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