In a study comparing operations of the Echelon
versus the Compressed Diamond and single-point urban
interchange (SPUI) designs (using Traf-Netsim),
the Echelon was able to process the most vehicles
and had no failing LOS, while the Compressed Diamond
had two failing LOS approaches under the same volume
conditions, and the SPUI had three.
Another second study showed the capacity and delays
at the Echelon to be competitive with conventional
freeway-style interchanges, and found that bottlenecks
were not transferred to the downstream intersection
in a signalized network.
