Synchro is a deterministic tool that has capabilities for performing HCM-based (mesoscopic) analysis. Synchro evaluates all interchange types mentioned in

Section 11.2.1

. Synchro analyzes signalized and unsignalized intersection delay for HCM-based (mesoscopic) interchange types (see HCS discussion above). However, Synchro is limited in evaluating and properly reporting results for interchanges with complicated geometry. Results from single roundabout, double roundabout, displaced left turn, and contraflow left turn interchanges may need to be scrutinized further or validated by another tool to confirm the results are reasonable. Similar to HCS, Synchro is limited in evaluating oversaturated interchanges with queue spillbacks that might affect upstream and downstream operations. Unlike HCS, Synchro does not directly report ETT.