Washington has become the first state in the US to implement Smarter Highways on I-5, a traffic management system that provides real-time traffic information on road conditions for drivers.

The system carries a network of sensors and 97 electronic signs on I-5, which automatically respond to changing traffic conditions and give drivers real-time information.

Overhead electronic signs will give drivers advance information of incidents on the road and alert them to change lanes or adjust speed when they approach slower-moving traffic.

The transportation tool is expected to improve safety, reduce collisions and congestion, and is based on proven technology used in Europe for the past two decades.

The $23.8m project is part of Washington’s congestion relief programme called Moving Washington.