Robert M. Gary wrote:

I heard some retired commuter pilot on the news last weekend suggesting
that the only way to prevent this in the future is to put traffic lights
(stop / go) on the end of every runway.


I saw this demoed somewhere (but I don't remember where). It was pretty
cool. There was a row of read lights across the taxiway access to the
runway until cleared for takeoff.

-Robert


That has been tried off and on for years, with less than great success.
It is a saturation job for someone in the tower to keep the system
working. Sooner or later, a wrong signal is sent.