A diverging diamond interchange (DDI) is a new freeway cross-street design that handles heavy left-turn movements. The ramp formation is similar to a traditional diamond interchange (common in Texas). However, traffic on the cross street switches to the left side of the roadway before the signalized intersection. By doing so, left-turning vehicles can enter the freeway without a left-turn signal phase at the signalized intersection. Also, left-turning vehicles on the cross street do not conflict with opposing through traffic and may turn without stopping.