SONORAN INSTITUTE
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RESTORE: Commercial And Mixed-Use Development Trends In The Rocky Mountain West
Monday, March 21st, 2016Distributed Generation: Cleaner, Cheaper, Stronger
Friday, March 18th, 2016
THE PEW CHARITABLE TRUSTS
Distributed energy resources allow electricity to be generated closer to where it is used, protecting businesses and institutions from unexpected outages caused by natural disasters and other disruptions. The U.S. national laboratories as well as public-private partnerships provide financial resources and access to research facilities to foster innovations to modernize the power sector from a 100-year-old centralized system to one that incorporates disparate clean technologies such as microgrids, batteries, and energy smart tools. These investments and the resulting new products and capabilities decrease costs, improve grid reliability, reduce emissions, and offer consumers more options.
ACEC’S ENGINEERING INC. — Navigating the P3 Landscape
Thursday, March 17th, 2016
AMERICAN COUNCIL OF ENGINEERING COMPANIES (ACEC)
The U.S. has no shortage of high-profile P3 projects, particularly in Texas, Florida and California. One of the first major uses of the P3 model in the U.S. dates back to 1999, when the Port Authority of New York and New Jersey faced a limited debt capacity to finance necessary improvements to New York’s JFK International Airport. It ultimately turned to a consortium of private developers, operators and financiers to renovate the international terminal. In addition, a private company has a 28-year lease with the Port Authority to operate the terminal.
Road to Nowhere: Failing U.S. Transportation Infrastructure
Wednesday, March 16th, 2016
COUNCIL ON FOREIGN RELATIONS
The United States should be spending more to improve and expand its transportation infrastructure, but instead barely spends enough to maintain the existing network. According to surveys, the quality of U.S. roads and transit is mediocre compared with other peer countries in the Group of Seven (G7). Although road and bridge conditions have actually been improving over time, capacity has not expanded as fast as population growth or miles driven. Congestion is now twice as bad as it was in the early 1980s.
ARTBA Special Report: The Presidential Candidates on Transportation
Tuesday, March 15th, 2016
AMERICAN ROAD & TRANSPORTATION BUILDERS ASSOCIATION (ARTBA)
As the 2016 presidential campaign season continues, ARTBA is carefully monitoring the candidates’ positions on transportation policy. Nearly all the remaining candidates have made at least one substantive public statement on transportation, or have included it in policy documents posted by their respective campaigns.
Public Transportation’s Role in the Knowledge Economy
Monday, March 14th, 2016
AMERICAN PUBLIC TRANSPORTATION ASSOCIATION
This study, which focused on the Silicon Beach Innovation District in Los Angeles County, CA; the Historic Technology District in northwest Austin, TX; and Research Triangle Park, one of the oldest research parks in the United States, located between Durham, Chapel Hill, and Raleigh, NC, finds that public transportation could be the determining factor in the success of innovation districts in the United States.
Worldwide Lessons: What NYC Can Learn From 5 Peer Cities
Friday, March 11th, 2016
URBAN GREEN COUNCIL Introduction Frankfurt and other German cities are renowned for their commitment to quality construction and engineering. London is filled with historic and diverse buildings. Singapore is famous for its direct regulation of behavior. Sydney and the rest of Australia attempted to put a price on carbon. San Francisco is a legislative testing […]
View this complete Infra Views post...ACEC’S ENGINEERING INC. — Congressman Fred Upton Spearheads ‘All of the Above’ Energy Policy
Thursday, March 10th, 2016
AMERICAN COUNCIL OF ENGINEERING COMPANIES (ACEC)
UPTON: We are always looking to advance our work every chance we get, and the FAST Act presented an opportunity to get a number of important provisions into law. Grid security and strengthening our energy infrastructure remain an important component of our energy portfolio moving forward. The FAST Act contained several provisions to ensure that our energy infrastructure, including the electric grid, is more resilient to 21st-century risks, such as physical attacks, cyberattacks and extreme weather.
View this complete Infra Views post...Alabama: Top 50 Projects to Support Economic Growth and Quality of Life
Wednesday, March 9th, 2016TRIP
While the modest funding increase and certainty provided by the FAST Act are a step in the right direction, the funding falls far short of the level of needed to improve conditions and meet the nation’s mobility needs and fails to deliver a sustainable, long-term source of revenue for the federal Highway Trust Fund.
Lost in Transportation
Tuesday, March 8th, 2016![Fig. 1. Fastest and simplest paths in primal and dual networks. (A) In the primal network of the New York City (NYC) metropolitan system, a simplest path (light blue) from 125th Street on line 5 (dark green) to 121st Street on line J (brown) differs significantly from a fastest path (gray). There is only one connection for the above simplest path (Brooklyn Bridge–City Hall/Chambers Street) in Lower Manhattan. In contrast, the above fastest path needs three connections (5→F→E→J). We compute the duration of this path using travel times from the Metropolitan Transportation Authority (MTA) Data Feeds (see Materials and Methods). We neglect walking and waiting times. (B) In the dual space, nodes represent routes [where ACE, BDFM, and NQR are service names (49)], and edges represent connections. A “simplest path” in the primal space is defined as a shortest path with the minimal number of edges in the dual space (light-blue arrow). It has a length of C = 1 and occurs along the direct connection between line 5 (dark-green node) and line J (brown node). The above fastest path in the primal space has a length of C = 3 (gray arrows) in the dual space, as one has to change lines three times. [We extracted the schematic of the NYC metropolitan system from a map that is publicly available on Wikimedia Commons (45).]](https://www.infrastructureusa.org/wp-content/uploads/2016/03/transitsystems.jpg)
AMERICAN ASSOCIATION FOR THE ADVANCEMENT OF SCIENCE
Cities and their transportation systems become increasingly complex and multimodal as they grow, and it is natural to wonder whether it is possible to quantitatively characterize our difficulty navigating in them and whether such navigation exceeds our cognitive limits. A transition between different search strategies for navigating in metropolitan maps has been observed for large, complex metropolitan networks. This evidence suggests the existence of a limit associated with cognitive overload and caused by a large amount of information that needs to be processed. In this light, we analyzed the world’s 15 largest metropolitan networks and estimated the information limit for determining a trip in a transportation system to be on the order of 8 bits.
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