True, but you don't need a marathon to tell you that. Just go anywhere downtown at rush hour on a weekday. Every 5 minutes, some driver will enter the box bef

True, but you don't need a marathon to tell you that. Just go anywhere downtown at rush hour on a weekday. Every 5 minutes, some driver will enter the box before it's clear, and block the intersection both ways for everybody. A couple months ago, a package truck crashed on the freeway a mile ahead of me, and traffic didn't move for over 3 hours. Our roads are not designed with redundancy as a primary concern.