TRB's National Cooperative Highway Research Program (NCHRP) Research Report 873: Guidebook to Funding Transportation Through Land Value Return and Recycling presents guidance on ways to mobilize some portion of property-value increases to fund maintenance and operations as well as investment in the infrastructure. Because local government typically has authority to deal with matters related to land use and land-related revenue-generating mechanisms, access to land value return and recycling—a subset of r...

TRB's National Cooperative Highway Research Program (NCHRP) Research Report 872: Contribution of Steel Casing to Single Shaft Foundation Structural Resistance proposes revisions to bridge design specifications based on comprehensive analytical and testing programs for investigating the effects of steel casing. Bridges are often constructed with a single enlarged shaft foundation supporting a column. In many cases, the shaft foundation is constructed with a permanent steel casing. The combination of the s...

TRB's National Cooperative Highway Research Program (NCHRP) Research Report 874: The Transportation Research Thesaurus: Capabilities and Enhancements documents the results of a comprehensive assessment of the Transportation Research Thesaurus’s (TRT’s) capabilities and strategies for the TRT’s future development. The TRT is a structured, controlled vocabulary of terms in English, used by TRB and a variety of other organizations to support indexing, search, and retrieval of technical reports, research doc...

TRB's National Cooperative Highway Research Program (NCHRP) Research Report 871: Long-Term Aging of Asphalt Mixtures for Performance Testing and Prediction presents a proposed standard method for long-term laboratory aging of asphalt mixtures for performance testing. The method is intended for consideration as a replacement for the method in AASHTO R 30, “Mixture Conditioning of Hot Mix Asphalt (HMA),” which was the most commonly used method for aging asphalt materials for performance testing for input t...

TRB's National Cooperative Highway Research Program (NCHRP) Research Report 875: Guidance for Evaluating the Safety Impacts of Intersection Sight Distance is a resource for practitioners involved in the planning, design, operations, and traffic safety management of stop-controlled intersections. It provides information on how to estimate the effect of intersection sight distance (ISD) on crash frequency at intersections and describes data collection methods and analysis steps for making safety-informed d...

TRB's National Cooperative Highway Research Program (NCHRP) has released a pre-publication, non-edited version of Research Report 879: Optimal Replacement Cycles of Highway Operations Equipment. The report serves as a handbook on equipment replacement concepts and an instruction manual for making cost-effective replacement decisions. The research report presents a process for determining replacement needs for highway operations equipment, identifying candidate equipment units for replacement, and prepari...

TRB's National Cooperative Highway Research Program (NCHRP) Research Report 870: Field Performance of Corrugated Pipe Manufactured with Recycled Polyethylene Content explores the use of corrugated high density polyethylene (HDPE) pipe manufactured with recycled content and proposes guidelines for manufacturing these pipes to ensure they meet the service life requirements for the given application. This project expounded on the research published in NCHRP Report 696. The research consisted of manufac...

TRB's National Cooperative Highway Research Program (NCHRP) Research Report 869: Estimating the Safety Effects of Work Zone Characteristics and Countermeasures: A Guidebook provides practitioners who develop phasing and staging plans for temporary traffic control through work zones with guidance to evaluate the safety impacts of their plan decisions. There is limited data on work zone crashes and fatalities that address trends, causality, and the best use of resources to improve work zone safety. This gu...

TRB's National Cooperative Highway Research Program (NCHRP) W eb-Only Document 240: Analysis of Work Zone Crash Characteristics and Countermeasures documents the research results of multiple analyses focused on developing an improved understanding of work zone crash characteristics and countermeasure effectiveness used to produce NCHRP Research Report 869 : Estimating the Safety Effects of Work Zone Characteristics and Countermeasures: A Guidebook. The guidebook provides practitioners who develop phasing...

TRB's National Cooperative Highway Research Program (NCHRP) Research Report 865: Guidance for Development and Management of Sustainable Enterprise Information Portals provides guidance for the development and management of effective Enterprise Information Portals (EIPs) at state departments of transportation. EIPs have become key tools for transportation agencies as they make available information about the transportation system and the agency’s activities. Such EIPs must be curated; that is, there are p...