There was a video online a couple of months ago about solar Roadway’s, which was annoying at best and dragged on before getting to the point. It was about work in the field to develop hexagonal shaped solar Cells that would both absorb light and project light, but would have a hardened surface that would still provide the same traction as a normal road. The idea was to have thousands of these solar cells all the way along a roadway that would power the lights that ran along side the roadways and also be warm enough to prevent ice forming on them during the winter; the excess water that would melt from them would form along a channel running down the length of the roadway that would filter out into nearby drains or fields.
If there was a hazard on the road the LED lights would activate and display a message and series of images to warn drivers of accidents or obstructions ahead; similar to the road markings we see on the roads today. Though these could be configured to display any message or road marking without the need to be repainted, as is the case with the road markings current painted on our roads.
If the cells were damaged, only the cells that were damaged would need to be replaced. Because they are hardened they ideally would last longer than a normal stretch of road and eventually cost less to replace.
The main benefit of having these Solar cells was not only to power the lights along side the road, but also to provide a wireless charging network, that would wirelessly transmit power currents to the batteries of the the cars as they used the Solar Roadways.
The idea sounds great in theory, but not much was said about how to power roads in places where there is not much sun, or during duller seasons; nothing was mentioned about the potential problems with health that could arise with wirelessly transmitting power currents to the cars.
Look around for these over the next 10 years with roadways in smaller USA towns.