Isaac Asimov 's The Caves of Steel and its use of moving walkways!

Strategic placement of directional fencing to prevent them from wandering onto to the road and guide them towards the crossing.

Entropy

It would be interesting to see this compared to demand-side trends. Jobs-housing fit ideally. Adding jobs at high rates like we see in Silicon Valley undermines the supply-side goals since they are built so slowly in relative terms.

California politics!