TRB's National Cooperative Highway Research Program (NCHRP) latest Ready Results examines an update to fuel usage factors. NCHRP Report 744 : Fuel Usage Factors in Highway and Bridge Construction provides guidance for more than 1,000 new fuel usage factors and guidance on implementing them, along with a tool for calculating factors for specific contracts and situations.

TRB's Airport Cooperative Research Program (ACRP) Web-Only Document 32: Improving AEDT Noise Modeling of Mixed Ground Surfaces develops a method to model the effects of single- and mixed-impedance surfaces on the propagation of aircraft noise in a manner suitable for model implementation to improve the noise prediction accuracy of the Federal Aviation Administration’s (FAA) Aviation Environmental Design Tool (AEDT). AEDT is an integrated noise model, which currently includes a lateral attenuation adjustm...

TRB's National Cooperative Highway Research Program (NCHRP) latest Research Topic Highlights explores the use and application of Warm Mix Asphalt (WMA). This fact sheet summarizes the use of WMA and applications in the past decade. WMA is produced at temperature that is cooler than hot mix asphalt (HMA), reducing worker exposure to asphalt fumes as well as reducing emissions. The publication provides an overview of how NCHRP research has addressed questions about WMA performance, evaluated WMA compared t...

TRB's National Cooperative Highway Research Program (NCHRP) Innovations Deserving Exploratory Analysis (IDEA) Project 184: Synthetic Household Travel Data Using Consumer and Mobile Phone Data explores the development of a method that fuses consumer data with anonymous, passive location data to create synthetic populations with individual-level synthetic travel diaries. The travel diaries detail each person’s travel and activities at locations in a timeline format.

TRB's National Cooperative Highway Research Program (NCHRP) latest Ready Results explores lighting for overhead signs in suburban and urban areas, where more complex road designs may make headlight illumination of overhead signs inadequate. In addition, there is little consensus and guidance about when sign lighting may be needed. NCHRP Report 828 : Guidelines for Nighttime Visibility of Overhead Signs revises guidelines to include a visual complexity scale to help transportation agencies determine when ...

TRB's National Cooperative Highway Research Program (NCHRP) latest Ready Results explores test methods for adhesive anchors—bolt systems augmented by structural adhesives. Adhesive anchor systems add holding strength to steel-to-concrete connections such as concrete construction panels. However, short-term tests of fully cured adhesives do not accurately predict long-term performance. NCHRP Report 757 : Long-Term Performance of Epoxy Adhesive Anchor Systems provides a suite of testing and materials speci...

TRB's Transportation Research E-Circular 220: First International Roadside Safety Conference: Safer Roads, Saving Lives, Saving Money contains papers and abstracts presented at the TRB First International Roadside Safety Conference: Safer Roads, Saving Lives, Saving Money on June 12-15, 2017 in San Francisco, California. The conference supports and advances global efforts to reduce deaths and serious injuries associated with run-off-road crashes. The TRB First International Roadside Safety Conference con...

TRB's Transit Cooperative Research Program (TCRP) Research Report 192: Decision-Making Toolbox to Plan and Manage Park-and-Ride Facilities for Public Transportation: Guidebook on Planning and Managing Park-and-Ride provides approaches to managing park-and-ride facilities, from developing the park-and-ride concept for a community to day-to-day management. Key themes include design, implementation, operations, and maintenance of these facilities. Supplementing the report is TCRP Web-Only Document 69 : Deci...

TRB's Transit Cooperative Research Program (TCRP) Web-Only Document 69: Decision-Making Toolbox to Plan and Manage Park-and-Ride Facilities for Public Transportation: Research Report and Transit Agency Case Studies supplements TCRP  Research Report 192 : Decision-Making Toolbox to Plan and Manage Park-and-Ride Facilities for Public Transportation: Guidebook on Planning and Managing Park-and-Ride. TCRP Web-Only Document 69 presents information gathered in the development of the guidebook, summarizes ...

TRB has released its requirements for submitting papers for presentation at the 2018 TRB Annual Meeting and/or publication in the Transportation Research Record: Journal of the Transportation Research Board . This guide covers the organization and formatting of manuscripts for peer review and for publication, as well as instructions for submission. Papers that do not follow the guidelines will be rejected without review. Papers are due August 1, 2017. TRB’s 97th Annual Meeting takes place January 7-11, 2...