Road that recharges electric vehicles as they drive opens

A stretch of road that recharges electric vehicles as they drive on it has opened in Sweden, in what is believed to be a world first.

Roughly 1.25 miles of road outside of Stockholm will allow adapted trucks to connect to an electrified rail mounted into the ground.
It is currently designed for trucks but will be capable of charging buses and cars.
The Swedish government has supported the project, named eRoadArlanda. The country plans to have a fossil fuel-free transportation system by 2030.
The electric road works with adapted vehicles that can recognise when they are travelling on it.
A movable arm lowers from underneath the vehicle onto the track below. Once connected, the vehicle's movement is powered and the battery recharges.
If the vehicle was to overtake another, the arm would be automatically lifted up. It would only lower when the vehicle has returned above the rail.
The driver will be charged for the electricity used, which is calculated by the eRoadArlanda system.
Safety features to avoid the electric roads harming humans and animals have been built in and the movable arm is designed to cope with small rocks on the road.
The rail is connected to the power grid and divided up into sections.
It functions automatically by powering up when a vehicle is above it and by the current disconnecting when the vehicle stops or moves away.
The conductive technology is similar to that used on some electric buses and trolleys.
It will be tested for a two-year period by a truck carrying freight and the trial is expected to extended to other parts of Sweden.
Those behind the project estimate that electrifying 20,000 kilometres (12,400 miles) of roads in Sweden with the technology would cost about 80bn Swedish krona (£6.6bn).
They say it would take less than three years to pay for the electrification of the roads and up to one kilometre of rail can be installed per hour.