Eero Ahonen wrote:
> 2-lane for one direction and 1 for the other, with no allowed exceptions 

This is done in the US ever so often (mostly over bridges), with the 
change that the middle lane switches back and forth depending on the 
time of day. So weekday mornings, there are more lanes going into the 
city, and weekday afternoons, there are more lanes coming out of the 
city, for example. But it's marked really well, and often even has a 
concrete barrier that gets moved back and forth so you physically can't 
cross to the wrong side.

-- 
   Darren New / San Diego, CA, USA (PST)
     "That's pretty. Where's that?"
          "It's the Age of Channelwood."
     "We should go there on vacation some time."

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