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Public Roads

New Research

The following new research studies reported by the Federal Highway Administration's (FHWA) Office of Research and Development are sponsored in whole or in part with federal highway funds.

Metrication of Roadside Hardware

The recently updated Guide to Standardized Highway Barrier Rail Hardware contains some important recommendations regarding metrication of roadside safety hardware.

Metric Conversion: How Soon?

When guillotines fell during the French Revolution, their blades were measured in a new unit of length, centimeters, not inches.

Crossing the Delaware!

The Chesapeake and Delaware (C&D) Canal Bridge is the featured structure of state Route 1, a 74-kilometer (km) limited access highway in central Delaware.