10. (20 points) Based on the estimations of trip distribution and mode choice, there are 3000 vehicle trips going from the Origin O to the Destination D. Figure below shows

the two routes and the cost (travel time) functions, where V denotes volume and T, travel time. a) Use the User Equilibrium (UE) method to determine the traffic assignment on two routes.Report the total travel times experienced by all travelers when the user equilibrium is reached. b) Use the System Optimum (SO) method to determine the traffic assignment on two routes.Report the total travel times experienced by all travelers when the SO equilibrium is reached.