Calibración del modelo de capacidad de rotondas del HCM2010 a condiciones locales: caso Córdoba, Argentina
DOI:
https://doi.org/10.14295/transportes.v23i1.832Keywords:
roundabouts, critical gap, follow up time.Abstract
This paper presents the calibration of the relevant parameters, critical gap and the follow-up time, of the roundabout’s capacity model from Highway Capacity Manual (TRB, 2010) to local conditions of the Córdoba Province, Argentina. The field study was developed in four roundabouts. Videotaping was made during rush hour traffic to obtain a representative sample and to calculate the calibration parameters of the model. These are the Maximum Likelihood Method, Linear Regression and Direct Measurement that were chosen as proceedings to estimate their values. It was determined that it is possible to adapt the capacity model from HCM2010 contemplating local driver behavior depending on the parameters. Through comparison with calibrated models in other countries, local drivers have smaller critical and follow-up intervals, which generate a greater capacity at the expense of safety. Local intervals which reflect model’s calibration are proposed.
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