The rail is divided into sections, and functions when a vehicle is detected above it. When a vehicle stops or overtakes, the current is disconnected and the arm raises automatically.
It's similar to that of a Scalextric, but with the added bonus that you're still completely in control of the car's movements. If you want to overtake, the arm automatically retracts and reinserts after the manoeuvre.
The road is currently being tested by a fleet of lorries that have been developed as part of the project, which are delivering goods for PostNord, the Swedish postal service.
Questions have been asked about how safe the road is, and whether it's capable of withstanding the cold, snowy conditions of Stockholm.
However, these issues seem to have been addressed. The CEO of eRoadArlanda told CBC Radio that the road is completely safe, "The connector from the vehicle goes down into tracks six-centimetres deep, there's no electricity at the surface. You can actually walk barefoot on it - even if it's flooded with salt water."
The aim of the road is to one day eliminate the need of roadside charging points, meaning vehicle batteries can be smaller, and in turn less expensive.
Sweden has set a target to be independent from fossil fuels by 2030, and with this road producing 90% less emissions than fossil fuel alternatives, this project could be the start of the solution.