Method for operating a parking assistance function of a motor vehicle

A method for operating a parking assistance function of a motor vehicle, wherein the motor vehicle comprises at least one sensor for detecting the road surrounding the motor vehicle, wherein the method includes the following steps:

• searching for and specifying a free parking space;
• determining a trajectory for parking the motor vehicle in the parking space and a sequence of an at least partially automated parking process;
• determining at least one outer boundary line of the road surface required for parking along the determined trajectory;
• detecting at least one road user approaching the determined outer boundary line on the road by means of at least one sensor;
• and
• determining the distance between the road user approaching the determined outer boundary line and the outer boundary line,
• wherein if the determined distance falls below a specified first threshold, outputting a warning signal to the approaching road user, and
• wherein the positions of the motor vehicle and the detected road user are determined as a function of time and, if it is not ensured that if the detected road user reaches the at least one safety line, the motor vehicle is in a position which allows the approaching road user to pass by, a number of further steps of the method will be carried out, depending on whether the parking assistance function allows automated longitudinal control of the motor vehicle.