|
Safe and Effective Temporary Traffic Control for Mobile Operations on Two-Lane Roadways
2/3/2023 7:00:00 PM
Mobile operations can either move continuously along the roadway as during most striping operations, or intermittently as during a pothole patching operation. Mobile operations on two-lane roadways present unique challenges to transportation agencies, not the least of which is the highly variable conditions encountered in the field. The TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 354: Safe and Effective Temporary Traffic Control for Mobile Operations on Two-Lane Roadways d...
Training and Certification of Construction Inspectors for Transportation Infrastructure
1/27/2023 4:00:08 PM
Construction inspectors (CIs) are the frontline workforce that ensures the work on transportation infrastructure projects meets the design and contract requirements and that the finished product meets or exceeds the quality standards. The TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 337: Training and Certification of Construction Inspectors for Transportation Infrastructure details the process for developing NCHRP Research Report 1027: Guide to Recruiting, Developing, and R...
Long-Term Vegetation Management Strategies for Roadsides and Roadside Appurtenances
1/26/2023 7:00:56 PM
Long-term vegetation management strategies that decrease the need for routine chemical and mechanical vegetation control can reduce recurring maintenance costs, highway worker exposure to traffic, impacts to the environment and cultural resources, and maintenance-related delays to the traveling public. However, these strategies vary in their effectiveness, longevity, initial construction costs, maintenance requirements, and aesthetic values. The TRB National Cooperative Highway Research Program's NCHRP W...
Risk-Based Inspection and Strength Evaluation of Suspension Bridge Main Cable Systems
1/20/2023 7:00:34 PM
Most suspension bridges in use today have cables composed of thousands of steel wires and most of these bridges are aging and carry high volumes of traffic. Deterioration of the elements of the suspension system is a problem, replacement of these elements can be expensive and problematic, while failure could be catastrophic. The TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 353: Risk-Based Inspection and Strength Evaluation of Suspension Bridge Main Cable Systems helps devel...
Virtual Public Involvement: Lessons from the COVID-19 Pandemic
12/14/2022 3:00:00 PM
During the COVID-19 pandemic, transportation agencies' most used public-engagement tools were virtual public meetings, social media, dedicated project websites or webpages, email blasts, and electronic surveys. As the pandemic subsides, virtual and hybrid models continue to provide opportunities and challenges. The TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 349: Virtual Public Involvement: Lessons from the COVID-19 Pandemic discusses gaps that need to be addressed so that...
Mobility on Demand and Automated Driving Systems: A Framework for Public-Sector Assessment
12/6/2022 3:00:00 PM
Innovative and emerging mobility services offer travelers more options to increase mobility and access goods and services. In addition, various technological developments have the potential to alter the automotive industry and traveler experience, as well as mobility and goods access. The TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 331: Mobility on Demand and Automated Driving Systems: A Framework for Public-Sector Assessment provides resources that identify key stakeholde...
Quantifying the Effects of Implements of Husbandry on Pavements: Appendices
12/1/2022 2:00:08 PM
Implements of husbandry (IoH) are vehicles designed for agricultural purposes and exclusively used in the conduct of agricultural operations. The TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 338: Quantifying the Effects of Implements of Husbandry on Pavements: Appendices is supplemental to NCHRP Research Report 1019: Quantifying the Effects of Implements of Husbandry on Pavements .
Programmatic Issues of Future System Performance
11/18/2022 5:04:00 AM
State transportation agencies (STAs) may need to focus their strategic planning and programmatic initiatives over the next two decades to mitigate threats to, and take advantage of, opportunities for system performance and agency effectiveness. The TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 346: Programmatic Issues of Future System Performance details a unified framework for characterizing the interests of STAs related to the issues and recommendations in two major TRB re...
Roadside Barrier Designs near Bridge Rail Ends with Restricted Rights-of-Way: A National Survey and Testing Reports
11/9/2022 7:00:35 PM
The TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 334: Roadside Barrier Designs near Bridge Rail Ends with Restricted Rights-of-Way: A National Survey and Testing Reports includes appendices to NCHRP Research Report 1013: Roadside Barrier Designs near Bridge Rail Ends with Restricted Rights-of-Way: A Guide , which describes the application and installation of short-radius guardrail systems for roadside barriers near bridge rail ends with restricted rights-of-way. The appendi...
Accessibility Measures in Practice
11/3/2022 3:00:40 PM
With an accessibility perspective, land use changes can bring transportation improvements by bringing activity locations closer together. If incorporated into transportation performance management, accessibility has the potential to highlight projects that would otherwise be overlooked because of their congestion-related impacts. The TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 330: Accessibility Measures in Practice documents research on accessibility measures that i...
|
|