Now consider how many people have died or been permanently injured from rolling stops. An extremely common mistake is a failed right-turn on red where the drive

Now consider how many people have died or been permanently injured from rolling stops. An extremely common mistake is a failed right-turn on red where the driver doesn't stop and rolls over a pedestrian in the crosswalk. And how many drivers will live with the guilt for the rest of their lives. Who cares how much carbon it saves when people get horrific injuries from it? If you want to save the planet, build intersections designed for rolling like roundabouts, crosswalks with signaling, and yield signs.