Running scripts & changing emulators

[suihan21]

Hello, I have some questions I would like to ask,

1. About running the validation script, in Town02 many RouteScenario_x(recetition x) were run, many of them were running Fauilure and basically failing in some of the later scenarios, is this normal?
2. the project is using carla simulator, such as uowoxiangyao change to other simulators this is feasible? If it is possible, what location modifications should be made?