The CNU proposal leverages the power inherent in a street grid to disperse traffic throughout an open, integrated network of routes. This is preferable to funneling a high volume of cars onto a few wide arteries, which encourages many drivers to use the exact same route. As a result, these wide arteries attract congestion like a magnet, and when the roadway reaches capacity, there is the perception that it must be widened to further increase capacity, leading to a vicious cycle of induced demand. ... This pattern has led to the decline of many once-prosperous urban districts and corridors, including here in the Bay Area. It confirms our observation that the freeway/artery model is inferior to the grid model, in which traffic is dispersed throughout a network of streets.
Investing in the rennaisance of our neglected urban cores - and in the creation of new urban areas where previously cars were king - will yield more bang for our buck than any freeway widening project, and should be a part of any taxpayer-funded stimulus package.
Please let your elected representative know how you feel about this.