We don’t need no traffic signals.
Perhaps we can trust in one another—in our basic goodness and self-interested ability to empathize and communicate and share and cooperate. From 20 minutes of pollution and frustration and isolation, to five minutes of cooperation and gas saved.
This sort of thing applies to bicycles, too.
Portishead lights-off trial which began on 14.9.09 and went permanent after journey times fell by over half with no loss of pedestrian safety