is it just me, or 101 is 2-3x more dangerous than 280 per this map in Bay Area? definitely more density of pins on 101 (you have to click to the center in between these 2 highways to see pins on both). It makes sense, since 280 is a bit less loaded, and built better, has full shoulder in most places.

The split to 85 going south on 101 is a very bad place - 7 pins very close together.