Example embodiments relate to techniques for enabling one or more systems of a vehicle (e.g., an autonomous vehicle) to request remote assistance to help the vehicle navigate in an environment. A computing device may be configured to receive a request for assistance from a vehicle to classify an object and to initiate display of a graphical user interface at a display device. The graphical user interface may be configured to visually represent the object and may comprise one or more graphical user interface elements to enable input to be provided for classifying the object. The computing device may also be configured to generate a response that includes a classification of the object based on detecting a selection of at least one of the one or more graphical user interface elements. Further, the computing device may be configured to transmit the response to the vehicle.