Detailed data on vehicle trajectory and trip information can be recorded during the simulation. Input and output flows as well as average link and path travel time can also be reported. These data are useful in calculating MOE's necessary for performance evaluation of traffic management systems.
Snapshots of queue lengths at selected locations can be reported at a given frequency. A queue is defined as a collection of vehicles whose speeds and gaps are less than some predefined thresholds. Every queue has one head and one or more branches that end with particular tails (see Figure 3-10). The queue head is the first vehicle upstream of the location of interest whose speed is less than the speed threshold (e.g. 0 or 5 mph). Queue tail is the last vehicle whose speed and gap distance from the leader is less than predefined thresholds.
