U.S. flag An official website of the United States government.
Official websites use .gov

A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS

A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

US Transportation Collection

rosaP Repository & Open Science Access Portal

The US Transportation Collection consists of documents from across all transportation modes with specific focus on research reports from US DOT, state DOTs, and other transportation organizations. Bookmark this collection: https://rosap.ntl.bts.gov/collection_ust or https://doi.org/10.21949/1530857.

Showing 101 - 120 of 36569 results
  • Pavement Markings Retroreflectivity Enhancing Traffic Safety Project Capsule
  • Mitigation of Tenting of Transverse Cracks and Joints in Asphalt Pavement
  • Effectiveness of Temporary Portable Rumble Strips on Work Zones
  • The Costs of Traveling With Children Transportation Challenges for LowIncome Families Policy Brief
  • Hydrologic Approaches to Playa Lakes Areas of Significant Karst Geology and Arid Regions Appendix C
  • Hydrologic Approaches to Playa Lakes Areas of Significant Karst Geology and Arid Regions Appendix A
  • US Department of Transportation Strategic Plan FY 20262030
  • Hydrologic Approaches to Playa Lakes Areas of Significant Karst Geology and Arid Regions Appendix B
  • Optimizing the Use of Local Aggregate in StoneMastic Asphalt
  • Identifying Road Segments That Bisect Predicted Movement Corridors for Small Priority Species in Virginia
  • Surface Mixtures Incorporating Recycled Plastic and High Reclaimed Asphalt Pavement Contents 2022 and 2023 Field Trials
  • Report R26R37 Identifying Road Segments That Bisect Predicted Movement Corridors for Small Priority Species in Virginia Research Project Brief
  • Electric Vehicle Adoption and Use in Rural and Urban Utah
  • Secondary Road Implementation of Stiffness Modulus for Unpaved Roads
  • Lifecycle Economic and Energy Efficiency Benefits of Managed Lane Corridors in Metro Atlanta
  • Implementation of Balanced Mix Design Methods in Oregon to Meet LongTerm Performance Goals
  • Accelerated Innovation Deployment AID Demonstration Project Asset Management Tool for Iowa County Engineers  Unpaved Granular Road Modulus
  • Update of IntersectionInterchange Guidelines for Rural Expressways in Nebraska
  • UltraHighPerformance Concrete UHPC for Bridge Deck Overlay and Structural Deck Repair
  • Guidance for LeftTurn Flashing Yellow Arrow FYA Implementation in Nebraska