driverless cars on Uk Roads

I have been watching one of those American programmes about guys in vans trying to buy tat to sell at a profit, only I was looking at the roads rather than the tat. Then I had a look on Google Earth at a few Midwest American towns laid out in neat grids, as is the whole countryside.



What I failed to see are roundabouts on American roads.



So if driverless cars are designed for roads without roundabouts can the be used on UK roads?


Please help.

Thanks!



I didn't find the right solution from the Internet.



References:
  www.theiet.org/forums/forum/messageview.cfm?catid=5&threadid=84076&enterthread=y

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