Weymouth, what have you done?

I used to live in Weymouth and it suffers greatly from traffic congestion, primarily because of a lack of roads crossing the river Wey and the harbour and the small size of roads, with one-ways, in the town centre. It didn't used to be too bad but then they decided to remove a pelican crossing on King Street - used by many people coming from Car Parks to the sea-front and replaced it with a standard set of lights further up the road which have made things worse since the phasing is much more traffic unfriendly. Now, they have completely ruined the town centre by replacing roundabouts with massive sets of traffic lights and at the clock-tower have replaced a mini-roundabout with traffic lights including a new restriction on right turns from Kings Street onto the Prom (you now have to make a much longer journey round by the hospital to come back again). The traffic is now MUCH worse than it has ever been and as always, the planners who do these things just carry on making these ridiculous decisions. They have made similar changes up Rodwell road including more restrictions and traffic lights.
It is hard to communicate how strongly I feel about this idiotic and seemingly unaccountable decision to spend a massive amount of money on technology which doesn't really make anything better, including the long-term maintenance cost and of course the lack of any reasonable chance to revert the changes because of all the money they have spent. It now has to work (even though it doesn't)!
Oh, and the justification for these changes which were always going to be popular? The 2012 Olympics and specifically the sailing part of them! An event which will take place for a single month somehow justifies an obscene amount of expenditure into a system that doesn't work. I don't know how many visitors are expected but since Weymouth already has an influx of 1000s of people each summer, I don't see that it will be massively different than normal. Also, more importantly, they have already proved that their changes have made the CURRENT situation worse before any extra traffic they expect. If they hadn't taken so long to install the lights, they could have perhaps trialled temporary lights before committing to the full-blown systems. The only thing I can imagine is that the people are either incompetent and simply believe that traffic lights are the ultimate management system or otherwise they are creating work to keep themselves in a job (although I expect they also employed consultants who will never say, "you don't need to change anything").
What we need is a public enquiry into this continued fiasco!