The TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 270: Developing a Guide to Ensuring Access to the Publications and Data of Federally Funded Transportation Research  provides guidance for state departments of transportation (DOTs) to help them meet the requirements of the U.S. DOT Public Access Plan requiring preservation of the products of all federally funded transportation research. The document is released in parallel with  NCHRP Research Report 936: Guide to ...

Cost-benefit analysis (CBA) is useful for climate change response and adaptation, and if used properly, it has great potential for long-range planning. CBA should help agencies navigate the spectrum of decisions from mitigation and greenhouse gas reduction to adaptation: where does investing public funds generate the most public good? The TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 271: Guidelines to Incorporate the Costs and Benefits of Adaptation Measures in Preparation ...

The National Cooperative Highway Research Program's NCHRP Web-Only Document 272: Existing and Emerging Highway Infrastructure Preservation, Maintenance, and Renewal Definitions, Practices, and Scenarios provides appendices to NCHRP Report 750, Volume 7: Preservation, Maintenance, and Renewal of Highway Infrastructure .

There is a lot of evidence that Native American tribes could be better involved in planning transportation projects. The TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 281: Integrating Tribal Expertise into Processes to Identify, Evaluate, and Record Cultural Resources explores how unique tribal perspectives and expertise could inform the tribal engagement and consultation process associated with the requirements and intent in the Section 106 process for successful project ou...

Thousands of workhorse bridges — which have spans of less than 300 feet —  are located in historic districts or adjacent to historic structures. These bridges are often considered character-defining features in the landscape and may also serve as important crossings. The TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 278: Context-Sensitive Design Options for Workhorse Bridges in Rural Historic Districts—Practitioner’s Guide and Research Report is designed to assist pract...

There is mounting evidence demonstrating the effectiveness of wildlife overpasses and underpasses in improving motorist safety and conserving wildlife. The TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 280: Valuing Wildlife Crossings and Enhancements for Mitigation Credits synthesizes current practices used by state DOTs and their partners for calculating and applying mitigation credits for wildlife crossings and other connectivity enhancements that provide safe passage for ...

Section 106 of the National Historic Preservation Act (NHPA) requires transportation agencies to consider the effects of their undertakings on historic resources when those undertakings are federally funded. Section 106 of the NHPA also allows for the use of Program Alternatives to tailor compliance, potentially streamlining Section 106 evaluations for commonly encountered categories of historic resources. The TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 275: Potential Sect...

Vehicle electrification is one of the emerging and potentially disruptive technologies that are being considered to reduce emissions of criteria pollutants, mobile source air toxics (MSATs), and greenhouse gases (GHGs) from motor vehicles. The TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 274: Zero Emission Vehicles: Forecasting Fleet Scenarios and their Emissions Implications analyzes a set of scenarios of infrastructure development, policy changes, and cost parameters, wit...

A programmatic approach to sustainable materials procurement in highway construction may be better than one-off attempts. For now, there is little guidance on procuring sustainability in highway construction and sustainability is not as important as cost or schedule. The TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 262: Sustainable Highway Construction describes the research process and outcomes used to develop NCHRP Research Report 916: Sustainable Highway Construction Gui...

Prior to 2013, the use of bicycle-specific signals in the U.S. was limited to a few jurisdictions. However, in recent years, the number of installations has grown rapidly. This research identified more than 500 intersections using bicycle signals in a variety of contexts. Despite the recent approval and practice, the TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 273: Road User Understanding of Bicycle Signal Faces on Traffic Signals explores the questions that remain regardi...