Driving around the bay area, it seems that 90% of traffic is caused by shared onramp-offramp lanes, or insufficient distance between them. Many highways otherw

Driving around the bay area, it seems that 90% of traffic is caused by shared onramp-offramp lanes, or insufficient distance between them. Many highways otherwise would have much more capacity. The telltale sign of exit issues is highways that bog down to 15mph for a couple miles, only to open up to 60+ with the same number of lanes. Total shame and often unnecessary. I wonder how many man-years are wasted as a result.