Withtheemergenceofvehicle-to-vehiclecommuni-cationtechnology,cooperativeadaptivecruisecontrol(CACC)carscanbeexpectedinthenearfuture.Inthispaper,novelcriteriaforstringstabilityareproposedformixedtrafficplatoonsthatconsistofbothautomatedandmanualdrivingcars.Amixedtrafficstringstabilityde