The objective of the project is to develop methods for finding the optimal or near optimal scheduling of crews and vehicles. Rules concerning e.g. working periods and union regulations have to be taken into consideration. In 1996 a system ACROS has been developed for computer based crew rostering, in particular applieable for medium term planning for allocatioon of bus drivers. ACROS was developed in cooperation with the company TR-Partners. Furthermore a system concerning the scheduling of duties for nurses has been developed. The system is based on set partitioning and constrained branch and bound, and it was developed in cooperation with Hovedstadens Sygehusselskab and Andersen Consulting.