<xs:simpleType name="zoneCategoryType">
    <xs:restriction base="xs:string">
        <xs:enumeration value="road surface" />
        <xs:enumeration value="road subsurface" />
        <xs:enumeration value="road shoulder" />
        <xs:enumeration value="road foreSlope" />
        <xs:enumeration value="road backSlope" />
        <xs:enumeration value="road curb-gutter" />
        <xs:enumeration value="bridge surface" />
        <xs:enumeration value="bridge body" />
        <xs:enumeration value="sidewalk" />
        <xs:enumeration value="ground" />
        <xs:enumeration value="ditch" />
        <xs:enumeration value="wall" />
        <xs:enumeration value="channel" />
        <xs:enumeration value="bike facilities" />
        <xs:enumeration value="obstruction offset" />
        <xs:enumeration value="longitudinal barrier" />
        <xs:enumeration value="sound barrier" />
        <xs:enumeration value="bridge abutment" />
        <xs:enumeration value="vertical pillar" />
    </xs:restriction>
</xs:simpleType>

• zoneCategoryType
• land:category