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Public Roads

Using GPR to Unearth Sensor Malfunctions

Ground-penetrating radar assesses loop detectors to determine necessary repairs so that all vehicles, including motorcycles, will be able to trigger traffic signals.

Improving Transportation Safety Is Priority No. 1

Safety is the top priority of the U.S. Department of Transportation and the Federal Highway Administration (FHWA), which remain deeply committed to reducing fatalities and serious injuries on the Nation's roadways.

Dashboard Tracks DDOT Projects

When President Barack Obama signed the American Recovery and Reinvestment Act (the Recovery Act) in February 2009, he demanded unparalleled transparency on use of the recovery funds.

NHI Redesigns and Enhances Its Web Site

Over the past decade, the National Highway Institute (NHI) has built a considerable portfolio of Web-based trainings and moved all course registration and material purchasing functions online.

Communication Product Updates

Below are brief descriptions of communications products recently developed by the Federal Highway Administration's (FHWA) Office of Research, Development, and Technology.

The Double Crossover Diamond

Introducing an innovative interchange for grade-separated crossroads that promises to speed construction, save money, and increase safety.

Traffic Simulation Runs: How Many Needed?

FHWA conducted a CORSIM case study to examine the validity of computer models for generating results that are reliable enough to make transportation investment decisions.