Assessing the resilience of the urban road networks is one of the necessities of all cities. In this study, the indices used in the literature for network analysis and also studies related to structural and functional resilience were reviewed. This analysis was first applied to the highway network of Sioux Falls, which was used as a model network, and then an urban network limited to the third traffic ring of Isfahan. Perturbation scenarios were simulated by Aimsun, which works using micro dynamic assignment. This study was performed assuming that no recovery operation was performed for the damaged nodes or links until a new equilibrium was reached. Average travel time and average travel distance were used as output for Sioux Falls network and average network delay was analyzed for Isfahan. These were evaluated to show how the change in the distribution of the share of trips in alternative routes for different failure scenarios. Then, by using the indicators related to the transition period from the primary equilibrium to the secondary equilibrium, which were formed with a resilience-oriented approach, the importance of each node or arc that was examined in separate scenario was shown in comparison with the other nodes. Keywords: Functional resilience, Disaster resilience, Urban road network, Resilience-oriented approach, Dynamic assignment, Aimsun