Patient transport apparatus with defined transport height

A patient transport apparatus comprising:

• a support structure comprising a patient support surface to support a patient;
• a lift mechanism comprising an actuator system to facilitate movement of the patient support surface relative to a transport surface;
• one or more sensors responsive to changes in the height of the patient support surface relative to the transport surface;
• a controller operably connected to the one or more sensors and the actuator system;
• a user interface comprising a user input device, operably connected to the controller, and configured to receive input from a user to cause the controller to operate the actuator system;
• a proximity sensor configured to detect a location of the support structure relative to a vehicle;
• and
• wherein the controller is configured to:
• define a transport height for the patient support surface;
• operate the actuator system to raise or lower the patient support surface to the defined transport height;
• provide an indication to the user that the defined transport height has been reached;
• and allow the user to raise to patient support surface above the defined transport height with input from the user on the user interface when the proximity sensor detects that the support structure is within a pre-defined proximity to the vehicle.