Cost-allocation methods for commuter, intercity, and freight rail operations on shared-use rail systems and corridors.

Using surface energy measurements to select materials for HMA pavements

TransXML XML schemas for exchange of transportation data

Roundabouts in the United States

Synthesis of information related to transit problems.

Acoustic rail-break detection demonstration at MTA New York City Transit

Pavement marking materials and markers testing the relationship between retroreflectivity and safety.

Identification of liability-related impediments to sharing §409 safety data among transportation agencies and a synthesis of best practices.

Integrating geospatial technologies into the right-of-way data-management process

Core competencies for highway safety professionals.