1. A method performed by a vehicle to output information for vehicle occupants, the method comprising: determining via a controller that a travel state of the vehicle is a first state; selecting a first information output system of the vehicle corresponding to the first state; selecting a first type of information based on the first state; outputting the first type of information via the first information output system; determining via the controller a change of the travel state of the vehicle from the first state to a second state; ceasing the output of the first type of information via the first information output system in response to the change of the travel state from the first state to the second state.