<
xs:restriction 
                        base="
                           
                              xs:string
                        ">
<xs:enumeration 
                           value="accident" id="_513"/>
                        <xs:enumeration 
                           value="serious accident" id="_514"/>
                        <xs:enumeration 
                           value="injury accident" id="_515"/>
                        <xs:enumeration 
                           value="minor accident" id="_516"/>
                        <xs:enumeration 
                           value="multi vehicle accident" id="_517"/>
                        <xs:enumeration 
                           value="numerous accidents" id="_518"/>
                        <xs:enumeration 
                           value="accident involving a bicycle" id="_519"/>
                        <xs:enumeration 
                           value="accident involving a bus" id="_520"/>
                        <xs:enumeration 
                           value="accident involving a motorcycle" id="_521"/>
                        <xs:enumeration 
                           value="accident involving a pedestrian" id="_522"/>
                        <xs:enumeration 
                           value="accident involving a train" id="_523"/>
                        <xs:enumeration 
                           value="accident involving a truck" id="_524"/>
                        <xs:enumeration 
                           value="accident involving a semi trailer" id="_562"/>
                        <xs:enumeration 
                           value="accident involving hazardous materials" id="_525"/>
                        <xs:enumeration 
                           value="earlier accident" id="_526"/>
                        <xs:enumeration 
                           value="medical emergency" id="_527"/>
                        <xs:enumeration 
                           value="secondary accident" id="_528"/>
                        <xs:enumeration 
                           value="rescue and recovery work REMOVED" id="_529"/>
                        <xs:enumeration 
                           value="accident investigation work" id="_530"/>
                        <xs:enumeration 
                           value="incident" id="_531"/>
                        <xs:enumeration 
                           value="stalled vehicle" id="_532"/>
                        <xs:enumeration 
                           value="abandoned vehicle" id="_533"/>
                        <xs:enumeration 
                           value="disabled vehicle" id="_534"/>
                        <xs:enumeration 
                           value="disabled truck" id="_535"/>
                        <xs:enumeration 
                           value="disabled semi trailer" id="_536"/>
                        <xs:enumeration 
                           value="disabled bus" id="_537"/>
                        <xs:enumeration 
                           value="disabled train" id="_538"/>
                        <xs:enumeration 
                           value="vehicle spun out" id="_539"/>
                        <xs:enumeration 
                           value="vehicle on fire" id="_540"/>
                        <xs:enumeration 
                           value="vehicle in water" id="_541"/>
                        <xs:enumeration 
                           value="vehicles slowing to look at accident" id="_542"/>
                        <xs:enumeration 
                           value="jackknifed semi trailer" id="_543"/>
                        <xs:enumeration 
                           value="jackknifed trailer home" id="_544"/>
                        <xs:enumeration 
                           value="jackknifed trailer" id="_545"/>
                        <xs:enumeration 
                           value="spillage occurring from moving vehicle" id="_546"/>
                        <xs:enumeration 
                           value="acid spill" id="_547"/>
                        <xs:enumeration 
                           value="chemical spill" id="_548"/>
                        <xs:enumeration 
                           value="fuel spill" id="_549"/>
                        <xs:enumeration 
                           value="hazardous materials spill" id="_550"/>
                        <xs:enumeration 
                           value="oil spill" id="_551"/>
                        <xs:enumeration 
                           value="spilled load" id="_552"/>
                        <xs:enumeration 
                           value="toxic spill" id="_553"/>
                        <xs:enumeration 
                           value="overturned vehicle" id="_554"/>
                        <xs:enumeration 
                           value="overturned truck" id="_555"/>
                        <xs:enumeration 
                           value="overturned semi trailer" id="_556"/>
                        <xs:enumeration 
                           value="overturned bus" id="_557"/>
                        <xs:enumeration 
                           value="derailed train" id="_558"/>
                        <xs:enumeration 
                           value="stuck vehicle" id="_559"/>
                        <xs:enumeration 
                           value="truck stuck under bridge" id="_560"/>
                        <xs:enumeration 
                           value="bus stuck under bridge" id="_561"/>
                        <xs:enumeration 
                           value="accident cleared" id="_638"/>
                        <xs:enumeration 
                           value="incident cleared" id="_639"/>
</
xs:restriction>