Three-Step Performance Assessment of a Pedestrian Crossing Time Prediction Model

Pedestrian behavior and safety are emerging issues in current transportation. One way to safely study pedestrian dynamics, especially at potential conflict points such as crosswalks, is through micro-simulation. This tool provides the opportunity repeatedly under different scenarios of interest. However, obtain reliable results, micro-simulation models need be calibrated their parameters fine-tuned. methodically calibrate these identify outcomes interest, develop a predictive model for those specific outcomes, use it fine-tune input model. To reliable, results should comparable model, validated. The aim this research present evaluate conventional developed using Vissim/Viswalk, given that chosen common output crossing time. achieve goal, multi-step procedure followed, which part more general methodological framework calibrating Vissim/Viswalk evaluation consisted three-step validation procedure, i.e. visual, conceptual operational validation. Operational (statistical) was performed by comparing variances understand whether predicted sample representative simulated sample. A correlation 97% have been found between micro-simulated time values, with mean values 6.41s 6.32s times, respectively. Furthermore, both fall within ranges literature field measurements variable, indicating good agreement real observed behavior.