In-dash Traffic Lights

There will necessarily be a transition period as we move from human-driven cars to driverless cars. As part of this transition, I propose we ignore the problem of driverless cars for a moment and instead start with centralized traffic control. Every used and new car should be designed or retrofitted with an on-dash traffic light system, sending GPS signals and receiving traffic control information. As a car approaches an intersection, the in-car system would notify the driver whether they're allowed to proceed.

This means you'll never again have to wait at a red light when there's nobody there, long before we're ready to let computers to be our eyes and hands controlling the car itself.

Pedestrian signals would feed into the same system.