On Tuesday, March 26, the containership Dali slammed into the Francis Scott Key Bridge in Baltimore, causing it to collapse into the Patapsco River. Tragically, six workers on the bridge were killed, but fortunately the collision occurred in the middle…
A central message of the highway building sales pitch is that traffic is ever-growing and ever worsening, and that we have no choice but to throw more money at expanded capacity. The Oregon Department of Transportation (ODOT) claims that traffic…
Increasing road capacity to reduce greenhouse gas emissions will backfire Widening roads to reduce idling simply induces more travel and more pollution Cities with faster travel have higher greenhouse gas emissions Time for another episode of City Observatory’s Urban Myth…
On Sunday June 11, a tanker truck caught fire on I-95 and the intense heat caused a section of the freeway to collapse. I-95 is one of the nation’s principal north-south connections, and carries 160,000 vehicles per day. It’s expected…
A new study calculates that twenty percent of all time “lost” in travel is due to traffic lights Finally, proof for the Lachner Theorem: Traffic signals are a major cause of traffic delay Another classic example of pseudo-science: Big data and…