The present disclosure relates to a method to re-identify a carrier on a laboratory transport system after a system failure. The carrier is associated with an identity and is configured to move over a transport plane of the laboratory transport system. The laboratory transport system comprises a monitoring system configured to monitor motion positions of the carrier on the transport plane when the laboratory transport system is activated. After a system failure, the identity dissociates from the carrier and the carrier keeps moving on the transport plane. After reactivation of the laboratory transport system, a predicted position of the identity is compared to an actual position of the carrier by a control unit of the laboratory transport system. The control unit assigns the identity to the carrier if the predicted position of the identity matches with the actual position of the carrier.