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Posts Tagged ‘TRB of NA’

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Portland Metro: How Much Travel-Time Reliability Matters

Friday, February 27th, 2015
Figure 1.1. Overall model framework.

TRANSPORTATION RESEARCH BOARD
More than 10 scenarios were identified and modeled in this project. The analysis results indicate that both bus rapid transit and variable message signs contribute to improved reliability for the Southwest Corridor when the performance over multiple modes and facilities is being considered. Bus rapid transit contributes to improved corridor performance by increased ridership due to higher reliability, and variable message signs contribute to improved corridor reliability by balancing the arterial and freeway flow via information dissemination.

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Posted in Infra Views, Local, Public Transportation, Transit

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Airport Cooperative Research Program: Annual Report of Progress

Wednesday, January 28th, 2015
Figure 1: 2014 ACRP Research Panel Participants by State

TRANSPORTATION RESEARCH BOARD
The shift in the airport industry—from predictable traffic and passenger levels to economic instability, capacity constraints, and congestion—has required airport practitioners to respond with creative problem solving. ACRP has been offering practical, hands-on software guidance, modeling tools, sample planning documents, best practices, worksheets, checklists, and more since 2006.

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Posted in Aviation, Infra Views

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Estimating Bicycling and Walking for Planning and Project Development

Monday, August 18th, 2014
Figures 1-1 and 1-2: Location of employment activity in Arlington County & Bicycle and pedestrian networks in Arlington County

NATIONAL COOPERATIVE HIGHWAY RESEARCH PROGRAM

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When to Use Existing Pavement in Highway Maintenance

Tuesday, August 12th, 2014
Photo of 35-year-old unbonded PCC overlay on I-90.

THE SECOND STRATEGIC HIGHWAY RESEARCH PROGRAM (SHRP 2)
This report documents the findings from the second Strategic Highway Research Program (SHRP 2) R23 project, Using Existing Pavement in Place and Achieving Long Life. This project falls within the SHRP 2 Renewal area, which focuses on improving the ability of highway agencies to design and construct long-lasting highway projects with minimal disruption to the traveling public. The project found that construction costs and time can be greatly reduced if the existing pavement can be used in place for part of the rehabilitation solution.

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Posted in Funding, Highway, Infra Views, Roads

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How to Invest in Fixed-Guideway Transit

Thursday, July 31st, 2014
Figure S.1. Influence of variables for ridership.

TRANSPORTATION RESEARCH BOARD
Fixed-guideway transit projects, such as urban rail and bus rapid transit (BRT) lines, are among the largest infrastructure investments that cities and metropolitan areas make. With capital costs ranging from tens of millions to several billion dollars, decisions on whether to build a fixed-guideway transit project, and what kind of project to build, are not taken lightly by local officials or their funding partners. Such decisions may follow many years of planning and analysis at the system, corridor, and project levels. It can cost millions of dollars just to develop and apply the analysis tools that are typically used to evaluate alternative projects.

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Posted in Buses, Funding, Infra Views, Private Investment, Public Transportation, Rail, Transit

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The Effect of Smart Growth Policies on Travel Demand

Tuesday, July 22nd, 2014
Table 1. Summary of Background Research Assessment

STRATEGIC HIGHWAY RESEARCH PROGRAM
TRANSPORTATION RESEARCH BOARD
While the transportation-land use connection and the impact of various smart growth strategies on travel demand are well-documented, practical guidance and tools for interpreting these insights to make them useful at key project decision points have been lacking. The objective of SHRP 2 Capacity project C16 was to provide transportation planning agencies with improved tools and methods for more accurately and comprehensively integrating transportation investment decision-making with land development and growth management.

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Integrating Conservation and Highway Planning

Thursday, June 12th, 2014
Figure ES.1. Steps of the Integrated Ecological Framework.

TRANSPORTATION RESEARCH BOARD
This project addresses the questions of how to (1) achieve interagency agreement on ecological solutions, (2) identify and leverage existing ways to increase predictability and assurance that credit will be allowed for addressing agency conservation and restoration priorities early in planning, (3) identify and leverage existing tools to increase resource agency confidence that mitigation commitments will be kept, and (4) make decisions last over time and across jurisdictions.

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Posted in Environment, Highway, Infra Views, National, Policy, Pollution, Sustainability

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Monitoring Bicyclist and Pedestrian Behavior

Monday, March 24th, 2014
FIGURE 4 BikeCount midsection count screen.

TRANSPORTATION RESEARCH BOARD
Bicycling and walking, or “active transportation,” are fundamental modes of transportation, but methods to monitor the traffic of these modes have been slow to advance until the last decade or so. The purpose of this document is to chronicle the most recent advancements in techniques and technology of active transportation monitoring, but it is not meant to be an exhaustive review of the field.

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Transportation Investments in Response to Economic Downturns

Wednesday, March 5th, 2014

TRANSPORTATION RESEARCH BOARD
Estimates of the magnitude of the effects of stimulus spending vary over a wide range. However, the preponderance of studies support the conclusion that federal stimulus spending, during a recession or period of high unemployment and when monetary policy is maintaining low interest rates, leads to an increase in gross domestic product (GDP) and in employment, at least in the short term (within 1 or 2 years after the spending).

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Critical Issues in Transportation

Tuesday, February 11th, 2014
The freight transportation system must adapt to a projected 80 percent growth in gross domestic product in the next 25 years.

TRANSPORTATION RESEARCH BOARD
The United States depends on transportation to compete globally and to help revive a sluggish domestic economy. Individuals depend on transportation not only to get to work but to shop, socialize, and access health care, among other goals (1). For all of its benefits to the nation and individuals, however, transportation imposes large costs—lost time in traffic congestion, deaths and injuries from crashes, demand for imported petroleum, and the release of greenhouse gas emissions and other forms of pollution.

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Posted in Aging Infrastructure, Aviation, Climate Change, Competitiveness, Funding, Highway, Infra Views, Inland Waterways, National, Policy, Public Transportation, Rail, Seaports, Sustainability

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