There is provided a turn signal indicator device that drives a turn signal indicators provided on a vehicle based on onoff states of a switch, and includes an operation state discrimination part that discriminates between first turn signal indication for lane change of the vehicle and second turn signal indication for course change of the vehicle based on onoff signals supplied from the switch. An expandable, inflatable chamber is disposed adjacent each bay and selectively expands into the chamber to secure the containers within the bay. The edge and the rear support element each have an inner surface. 4 Hz and a high frequency cutoff of no less than 20 Hz.