Vehicles are shown as colored rectangles with dimensions proportional to their size. The following information can be displayed: vehicle type (vehicle classes, or driver groups such as information availability, lane-use privilege, etc), car-following regime, speed and acceleration (accelerating, cruising, decelerating, or stopped), lane changing (left, right and whether in mandatory state or not), and turning movement (e.g. turn right, straight, left, etc.) at the downstream intersection. The user can also pause the simulation at any time to query information on individual vehicles. The animation of vehicle movements is updated at a fixed time interval. Figure 3-13 shows in detail the I-90 and I-93 interchange (at the lower left corner of the network shown in Figure 3-11).
Figure 3-13: Animation of vehicle movements