Excellent guess...
Longitudinal grooving works well, but on I-84 east of Boise they did transverse grooves. That'll drive you crazy!
If the concrete doesn’t absorb ANY water though, it will leave a thin sheen of water on the surface of the roads, leading to extensive hydroplaning.
They will have to come up with a surface treatment that can solve that problem, I’m guessing.
Excellent guess...
Longitudinal grooving works well, but on I-84 east of Boise they did transverse grooves. That'll drive you crazy!