Question about traffic lights

This may sound ridiculous, but...
I always thought that somewhere in Adelaide exists a man in a room where he can see all the major intersections on a TV or computer or something. Thus if an intersection becomes clogged due to an abnormally high influx of traffic on one end, he can manually control the traffic lights until flow returns to normal.
However, when I mentioned this to Mr McSpaz, he thought I was talking bollocks.
I am SURE that there is a person who can control the traffic lights. I reckon the bloke even wrote to the Advertiser once saying that he didn't want to divulge his identity in case an angry mob came after him.
Can someone please confirm this for me? I would hate to think that I imagined it all.
I always thought that somewhere in Adelaide exists a man in a room where he can see all the major intersections on a TV or computer or something. Thus if an intersection becomes clogged due to an abnormally high influx of traffic on one end, he can manually control the traffic lights until flow returns to normal.
However, when I mentioned this to Mr McSpaz, he thought I was talking bollocks.
I am SURE that there is a person who can control the traffic lights. I reckon the bloke even wrote to the Advertiser once saying that he didn't want to divulge his identity in case an angry mob came after him.
Can someone please confirm this for me? I would hate to think that I imagined it all.