SIDRA for HCM SIDRA INTERSECTION offers powerful extensions to the Highway Capacity Manual (HCM) SIDRA INTERSECTION software complements the Highway Capacity Manual (HCM) as an advanced intersection and network analysis tool. The HCM Setup in SIDRA INTERSECTION offers options for US Customary and Metric units. SIDRA and HCM use common fundamental traffic modelling principles and the HCM setup in SIDRA is calibrated using the HCM model parameters. Unlike other software packages, SIDRA INTERSECTION does not claim to be a simple replication of the HCM procedures. Instead, it offers significant extensions to the capabilities HCM offers. To learn more, visit sidrasolutions.com/hcm SIDRASOLUTIONS.COMhttp://www.sidrasolutions.com/hcm http://www.SIDRASOLUTIONS.COM