John Hennessy III,
P.E.
by Mary Scott Nabers New York City declared a state of emergency recently because of damage from the extraordinary flash floods, which destroyed streets, devastated property and completely upended mobility. Delivering over seven inches of rain in one day, the weather event was one of the most impactful disasters ever experienced by the city. Data released […]
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School districts throughout the U.S. are launching initiatives to keep students safe in classrooms. Millions of dollars are being spent but, relief is not coming quickly enough for most parents, students, teachers, and administrators. Campus comfort is hard to find currently. Teachers and administrators are focused on security, threats, incident attempts, cybersecurity breaches, and other […]
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This report examines the data needs that agency staff need to consider when developing a MOD agreement with private providers. Background information on elements of data sharing in this context includes general state of the practice, and challenges and opportunities for transit agencies.
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Los Angeles’ authorities are replacing the iconic Sixth Street viaduct with an impressive earthquake-proof structure.
Read the full story on this video, including images and useful links, here: https://www.theb1m.com/video/building-los-angeles-earthquake-proof-bridge
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The purpose of this report is to identify the extent to which TNCs contributed to increased roadway congestion in San Francisco between 2010 and 2016, relative to other potential contributing factors including employment growth, population growth, and changes to the transportation system. This information is needed to help the Transportation Authority fulfill our role as the county Congestion Management Agency and inform our policy and planning work.
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Silicon Valley is booming. The economy has come roaring back since the 2008 downturn. In 2013, the total surged past even the 1999 high-water mark of the dot-com boom, and there are more total jobs in the county than ever before. That roaring economy has an impact everyone feels: more traffic.
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Public transit ridership is on the decline in California. But why? Researchers at the UCLA Institute of Transportation Studies (ITS) looked at the data to figure out what’s going on and how the problem could be solved.
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In the last ten years transit use in Southern California has fallen significantly. This report investigates that falling transit use. We examine patterns of transit service and patronage over time and across the region, and consider an array of explanations for falling transit use: declining transit service levels, eroding transit service quality, rising fares, falling fuel prices, the growth of Lyft and Uber, the migration of frequent transit users to outlying neighborhoods with less transit service, and rising vehicle ownership. While all of these factors probably play some role, we conclude that the most significant factor is increased motor vehicle access, particularly among low-income households that have traditionally supplied the region with its most frequent and reliable transit users.
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The Oroville Dam spillway incident was caused by a long-term systemic failure of the California Department of Water Resources (DWR), regulatory, and general industry practices to recognize and address inherent spillway design and construction weaknesses, poor bedrock quality, and deteriorated service spillway chute conditions. The incident cannot reasonably be “blamed” mainly on any one individual, group, or organization.
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While some repair work is moving forward at Oroville, significant issues remain to be addressed. This incident is a wake-up call for action on several fronts at this facility and thousands of other high-hazard dams in the United States to ensure a safe and reliable water system that protects communities and the rivers that flow through them. A warming climate with changing precipitation patterns underscores the urgency.
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