I drive too much so I get to see traffic in action. Driverless cars would certainly improve traffic flows, another stray thought was driverless trucks could be run at low peak traffic times and could be routed to avoid peak traffic areas, also driverless trucks could run 24/7 and not be restricted by the required rest periods needed by human drivers.

In many hilly regions they have truck lanes and restrict trucks from the left lane to allow the lighter vehicles to travel through, however they are quite often thwarted by functionally illiterate truck drivers and people in cars not driving the speed limit. Another human ploy that causes traffic slowdowns in urban areas is the idiot that comes down the ramp and immediately merges to the far left lane causing the cars traveling at the speed limit to slam on brakes to keep from hitting them, then everybody has to get back up to speed, eventually as the traffic load increases this causes the slowdowns, that cause traffic backups.

I wonder how driverless cars would perform in heavy fog, rain and other inclement weather?

Aaron