Dynamic Traffic Assignment (DTA) is increasingly being considered to model advancedstrategies. Capacity is a crucial parameter in the calibration of traffic flow models utilized as partof dynamic traffic assignment modeling. The Highway Capacity Manual has been used as theauthoritative source of defining and estimating capacity in the US. With increased traffic detectordata availability in recent years, it is now feasible to locally measure capacity at bottleneck spotsutilizing different methods.This paper investigates the benefits and necessity of implementing DTA in the analysis ofadvanced strategies, such as managed lanes, and the importance of the calibration of theassociated traffic model parameters. In this regard, the paper illustrates the importance of codingcapacity based on detector measurements in DTA tools, particularly when there is evidence thatthe modeled corridor capacity is lower than HCM-based estimates. This paper also demonstratesthe shortcomings of utilizing the traffic flow model of the static assignment tools for assessingmanaged lanes, even when the measured capacity values are coded, thus illustrating the need toutilize simulation-based DTA modeling for such assessments.
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