[syrgian]

It seems to me that it would increase safety, but I guess only a simulation could truly tell. I understand your take, but I have a different one: most accidents happens when someone makes a mistake at stop light changes. Less cars stopping/starting at red lights seems less chances for accidents to me.

Let's go with an absurd example: If you multiplied by 5 both the length of red and green stages, I would expect much less accidents per day, but it would obviously also be much more frustrating to move around (and possibly more accidents if the amount of infractions increase because of the frustration). If you divided them by 2, I would expect much more accidents of all kinds.