https://www.youtube.com/watch?v=H901KdXgHs4
This should help explain how silly of an idea this is. Concept, neat idea. Engineering implementation, utterly foolish.
Summary:
Traction of the road is actually questionable, especially in wet conditions.
Glass wears smooth very quickly, making traction even worse.
Roadways made of tiles crack easily, and tiles come loose after continuous use.
99% of asphalt is already made of recycled material, which is a big reason why it is so cheap and widely used.
Just the cost of the glass is $20 trillion, without any of the technology or other BS.
Would have to totally rework the power line system to fit the type of energy created by solar panels.
The light pollution from the LED lights would be pretty bad.
The LEDs can't be seen in the day so none of those lines or road markings could be seen 50% of the time.
Parking lots are full of cars during the day, blocking the sunlight. And are empty at night.
I'm about halfway through. I'll keep updating if needed haha.
The snow melting thing is total ********, the energy costs don't add up. It takes way to much energy to melt snow. Not to mention the north gets little solar energy as it is, plus it is snowing and cloudy.
Solar panels will get covered in dirt and oil, which blocks light and wears down glass, which is a very soft material. That makes the glass slicker and less clear. Both bad.
It's a much better idea just to build next to roads or even cover the roads and put panels on top of that.