As someone who has lived pretty much all of my life in the desert I look with considerable caution towards high speed asphalt.
The road concrete is roughened, you have good traction even in less than ideal weather. And concrete lasts an awful lot longer under heavy traffic. Smooth concrete would be like you are worried about, but the high speed roads aren't smooth concrete.
Asphalt is a hydrocarbon product and can sweat. But worse is the oil from cars. Drip, drip, drip--since it's on a hydrocarbon base it loosely bonds with it and simply accumulates. When the rain does come along the roads will be very slippery until there has been enough rain and cars to wash them clean. Until then, hydroplane accidents galore. Be especially careful around gas stations.
The road concrete is roughened, you have good traction even in less than ideal weather. And concrete lasts an awful lot longer under heavy traffic. Smooth concrete would be like you are worried about, but the high speed roads aren't smooth concrete.
Asphalt is a hydrocarbon product and can sweat. But worse is the oil from cars. Drip, drip, drip--since it's on a hydrocarbon base it loosely bonds with it and simply accumulates. When the rain does come along the roads will be very slippery until there has been enough rain and cars to wash them clean. Until then, hydroplane accidents galore. Be especially careful around gas stations.