It's pretty simple: build a highway and it will saturate. At this point it is only a matter of when total saturation starts (7am? 6am?) and how long total satur

It's pretty simple: build a highway and it will saturate. At this point it is only a matter of when total saturation starts (7am? 6am?) and how long total saturation lasts. Since development follows highways, you already know where transit needs to be. Caltrain already closely matches 101 on the peninsula.