The original poster makes reference to the "traffic management idiots".
I always sort of assumed that the traffic management people were those relatives of politicos who only showed up for work on payday. Hence, the total lack of anything appearing to be traffic management.
Here in Bani, the general rule seems to be that the lights are to be obeyed on weekdays, stop and proceed if clear on red on weeknights, and totally ignored on weekends, AMET or no. That and the strange configuration of one-way streets seem to completely confuse the people driving though, especially those driving from Port-au-Prince to Santo Domingo.