In the European Union, route PSOs are governed by Regulation (EC) No 1008/2008 and Council Regulation (EEC) 3577/92. They must be offered for tender in the "Official Journal of the European Union" and be open to any transport operator registered in an EU member state. There are limitations in the number of passengers which can be carried where the route can remain eligible for PSO. The winning tenderer usually receives a monopoly on the route, but may have to conform to one or more conditions of service, such as the type and size of vehicle, the timing of services, the maximum fare paid for a portion or all of the seats offered, membership of a common reservation system, quality of service measured by a maximum percentage of cancelled services, etc.