<
xs:restriction 
                        base="
                           
                              xs:string
                        ">
<xs:enumeration 
                           value="delays" id="_1537"/>
                        <xs:enumeration 
                           value="short delays" id="_1538"/>
                        <xs:enumeration 
                           value="long delays" id="_1539"/>
                        <xs:enumeration 
                           value="very long delays" id="_1540"/>
                        <xs:enumeration 
                           value="delays of uncertain duration" id="_1541"/>
                        <xs:enumeration 
                           value="delayed until further notice" id="_1542"/>
                        <xs:enumeration 
                           value="busy" id="_1543"/>
                        <xs:enumeration 
                           value="very busy" id="_1544"/>
                        <xs:enumeration 
                           value="crowded" id="_1545"/>
                        <xs:enumeration 
                           value="overcrowded" id="_1546"/>
                        <xs:enumeration 
                           value="cancellations" id="_1547"/>
                        <xs:enumeration 
                           value="route cancelled and no replacement" id="_1548"/>
                        <xs:enumeration 
                           value="service cancelled" id="_1549"/>
                        <xs:enumeration 
                           value="service suspended" id="_1550"/>
                        <xs:enumeration 
                           value="service withdrawn" id="_1551"/>
                        <xs:enumeration 
                           value="service fully booked" id="_1552"/>
                        <xs:enumeration 
                           value="all services fully booked" id="_1553"/>
                        <xs:enumeration 
                           value="next departure" id="_1554"/>
                        <xs:enumeration 
                           value="next arrival" id="_1555"/>
                        <xs:enumeration 
                           value="very frequent service" id="_1556"/>
                        <xs:enumeration 
                           value="frequent service" id="_1557"/>
                        <xs:enumeration 
                           value="fairly frequent service" id="_1558"/>
                        <xs:enumeration 
                           value="regular service" id="_1559"/>
                        <xs:enumeration 
                           value="irregular service" id="_1560"/>
                        <xs:enumeration 
                           value="not operating" id="_1561"/>
                        <xs:enumeration 
                           value="system busy" id="_1562"/>
                        <xs:enumeration 
                           value="system very busy" id="_1563"/>
                        <xs:enumeration 
                           value="system crowded" id="_1564"/>
                        <xs:enumeration 
                           value="system overcrowded" id="_1565"/>
                        <xs:enumeration 
                           value="travel time" id="_1566"/>
                        <xs:enumeration 
                           value="headway" id="_1567"/>
                        <xs:enumeration 
                           value="extra services in operation" id="_1568"/>
                        <xs:enumeration 
                           value="delays clearing" id="_1660"/>
                        <xs:enumeration 
                           value="delays cleared" id="_1661"/>
                        <xs:enumeration 
                           value="normal services resumed" id="_1662"/>
                        <xs:enumeration 
                           value="operating" id="_1663"/>
</
xs:restriction>