Most weekday afternoons in Silicon Valley, the highway feels like a parking lot—except that you can drive a bit more quickly through a parking lot. The strains on highways are like the visible part of the iceberg. It’s the easiest to see, but growth places the same demands on every part of a region’s infrastructure, from transit systems to schools. Over the past few years, the problem has reached a much deeper level. While jobs have grown, the housing supply has not kept pace. Basic economics goes to work.
