World’s First Electrified Road Charges Cars’ Batteries as They Drive

A 2-kilometre (1.2-mile) stretch of electrified road, which links Stockholm’s Arlanda airport to a site outside the capital city, now recharges the batteries of electric cars and trucks driving over it.

The road uses a technology known as conductive charging, in which energy is transferred from two tracks of electric rail installed under the road’s surface to the vehicle via a movable arm attached to the bottom of the car or truck. There is no electric current on the surface of the road, and tests where the road was flooded with salt water found that the electricity level at the surface of the road was low enough to walk on barefoot.

The electric current is automatically disconnected when the vehicle stops, and the system calculates each vehicle’s energy consumption, enabling electricity costs to be debited per vehicle.