Unstable traffic assignment, improper control options, inaccuracy in modelling vehicle guidance
SimTraffic
Signal design, intersections, roundabouts, pedestrians
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Fixed headway, no ramp metering, unstable saturation flow rates
SUMO
Heterogeneous traffic, freeways, intersections,
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Longer computational rates, discrete lane changing, lateral displacement within a lane cannot be modelled, bottleneck formation due to low-speed vehicles
VISSIM
Heterogeneous traffic, pedestrians, intersections, signal control, transit operations, ramp metering
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Lateral displacement within a lane cannot be modelled, bottleneck formation due to low-speed vehicles in mixed traffic flow, no traffic assignment algorithm