Smithsonian.com writes about ‘Life Without Left Turns‘:

I still hate making left turns. I’m not the only one. UPS minimizes left turns for its delivery trucks to save on fuel. (And it works, as the Mythbusters demonstrated last year.) In the 1960s, the state of Michigan designed an intersection known as the “Michigan left” that prevents people driving on side streets from making left turns onto a multi-laned divided road; if they wish to go left, they’ll first have to go right and then make a U-turn. And superstreets, or restricted crossing U-turns, which are found in some other parts of the country, such as North Carolina, work in a similar way, preventing left turns. It’s never really caught on, though, since it seems to be a big inconvenience.

The ‘Superstreet‘:

The ‘Michigan Left‘:

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This entry was posted on Tuesday, February 1st, 2011 at 8:52 AM and is filed under Civil Engineering, Roadway Design, Transportation Engineering. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.