Eliminating the Dreaded Left Turn
Slate's Tom Vanderbuilt looks at the left-turn problem, and the solution proposed by Gilbert Chlewicki. Here's how it works:
"As the eastbound driver approaches the highway interchange (whose lanes run north-south), traffic lanes "criss cross" at a traffic signal. The driver will now find himself on the "left" side of the road, where he can either make an unimpeded left turn onto the highway ramp, or cross over again to the right once he has gone under the highway overpass."