Dual-mode roadside assistance flag

The present teachings relate to a flag assembly for use with a vehicle having a window that retracts from a closed position to an open position. The flag assembly comprises an elongated post having an upper end, a lower end, and a waist portion disposed between the upper end and the lower end. A window edge retaining means projects outwardly from the waist portion, and is configured to be received by a window. The lower end of the elongated post is configured to be inserted between the window and a door frame of the vehicle. The upper end of the elongated post comprises a flag holding means that is configured to hold an alert flag within. The flag assembly can be inserted between the window and an upper frame of the vehicle, or it can be inserted between the window and a door frame of the vehicle.