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IPFS News Link • Science

Eliminating Left Hand Turns

• arclein
Superstreets are thoroughfares where the left-hand turns from side streets are re-routed, as is traffic from side streets that needs to cross the thoroughfare. In both instances, drivers are first required to make a right turn and then make a U-turn around a broad median. While this may seem time-consuming, the study shows that it actually results i

2 Comments in Response to

Comment by Morpheus
Entered on:

this superstreet is called a round-a-bout!  Roundabouts are more efficient than a traffic signal and when the power goes out you can still travel  The other big benefit is they act as natural speed limiters!  Impacts that do occur in them are less serious, because they are glancing blows, never head ons or t-bones

Comment by Anonymous
Entered on:

 Robert, these aren't "superstreets."  These are "jughandles".  Obviously you have no experience driving in New Jersey where jughandles proliferate.  It's a freeking traffic nightmare.  Sometimes you really have no idea what you are talking about.  Stick to physics.

The best system I've seen are feeders along highways in Houston on the newer highways (example, around Sugartown) where there are left turns under the highway incorporated with uturns.