SIDRA INTERSECTION network analysis technique can be used to model a large number of traffic facilities that involve closely-spaced intersections and interchanges including alternative intersections and interchanges. This includes modelling Staged Crossings at Sign Controlled Intersections.
The Staged Crossing model as a network can be used (i) when there is storage available in the central (median) area that allows the turning movement to slow down or stop and give-way / yield to the main road Through traffic stream and (ii) when there is an acceleration lane for merging.
Detailed information on modelling Staged Crossings at Sign-Controlled Intersections can be found in SIDRA INTERSECTION User Guide, Section 5.10.7.
Example project files are available for download using the following links.
The use of old version project files which used a diagonal leg as a trick to model these crossings is not recommended and support is not available for this old method of modelling these facilities.