RIP The Transportation Research Board's Research in Progress (RIP) Database contains information on more than 9,700 current or recently completed transportation research projects. RIP records primarily are projects funded by the U.S. Department of Transportation and State Departments of Transportation. University transportation research also is included in the database.

Design & Construction

• Bridges & Other Structures
• Construction
• Design
• Geotechnology
• Hydraulics & Hydrology
• Materials
• Pavements

Operations & Preservation

• Maintenance & Preservation
• Operations & Traffic Management
• Security & Emergencies

Planning & Environment

• Economics
• Energy
• Environment
• Planning & Forecasting
• Society

Policy & Organization

• Administration & Management
• Data & Information Technology
• Education & Training
• Finance
• History
• Law
• Policy
• Research
• Transportation (general)

Safety, System Components, and Users

• Freight Transportation
• Passenger Transportation
• Safety & Human Factors
• Terminals & Facilities
• Vehicles & Equipment

Resources

• Frequently Asked Questions
• About TRID
• Documentation & Training Materials
• TRID Database Homepage
• TRID Serials
• TRT - Transportation Research Thesaurus
• International Transport Research Documentation (ITRD)
• Literature Searches and Literature Reviews for Transportation Research Projects