How to drive a DDI

For more information about diverging diamond interchanges:

Two Web sites on DDIs in Springfield, Mo., including an animation showing how traffic flows through a DDI:

http://www.modot.mo.gov/springfield/major_projects/Greene/I-44andRoute13.html

http://www.modot.mo.gov/springfield/major_projects/Stone/NationalJRFDDI.html

A YouTube video of the I-44 DDI in Springfield:

http://www.youtube.com/watch?v=B5JtZMPTNAY

A Google view of the DDI in Versailles, France:

http://maps.google.com/maps?t=k&q=48.832115,2.152859&ie=UTF8&ll=48.832115,2.152859&spn=0.002588,0.006947&z=18