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SAE ATIS Committee Working Draft
ITIS Phrase Tables, Draft [issued: 04-11-09] 
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This is a draft document of the SAE ATIS committee, subject to change.
6.2 Data Element: DE_Alternate Route
Use: The ITIS enumeration list commonly referred to as "Alternate Route," is assigned the upper byte
value of [33] (which provides for value ranges from 8448 to 8703, inclusive).  This list is formally called
"AlternateRoute" in the ASN.1 and XML productions.  Items from this enumeration list can be used as an
event category classification.  This list contains a total of 23 different phrases, divided into 2 further sub-
categories (the division into these sub-categories is informational only and other groupings may also be
used).  The remaining 104 values up to the lower byte value of [127] are reserved for additional "national"
phrases in this byte range.  Local phrases may be added to the list starting with the lower byte value of 128
and proceeding upward from there (in other words, the first value assigned for any local additions to this
list would be given the value 8576).  
ASN.1 Representation:
AlternateRoute ::= ENUMERATED  { 
   detour-where-possible                           (8449),  
   no-detour-available                             (8450),  
   follow-signs                                    (8451),  
   follow-detour-signs                             (8452),  
   follow-special-detour-markers                   (8453),  
   do-not-follow-detour-signs                      (8454),  
   detour-in-operation                             (8455),  
   follow-local-detour                             (8456),  
   compulsory-detour-in-operation                  (8457),  
   no-suitable-detour-available                    (8458),  
   detour-is-no-longer-recommended                 (8459),  
   local-drivers-are-recommended-to-avoid-the-area (8460),  
   trucks-are-recommended-to-avoid-the-area        (8461),  
   consider-alternate-route                        (8462),  
   consider-alternate-parking                      (8463),  
   consider-alternate-destination                  (8464),  
   consider-alternate-area                         (8465),  
   -- Specific Route Types
   snow-route                                      (8466),  -- NEW:
   emergency-snow-route                            (8467),  -- NEW:
   evacuation-route                                (8468),  -- NEW: May be preceded by a
                                                            -- specific type, Used also
                                                            -- for general emergency
                                                            -- routes.
   truck-route                                     (8469),  -- NEW:
   hazardous-materials-route                       (8470),  -- NEW: May be used with 'any
                                                            -- time' for allowed, or 'no'
                                                            -- for probibited, or
                                                            -- 'detour'
   detour                                          (8471),  -- NEW:
   ... -- # LOCAL_CONTENT_ITIS 
   }
XML Representation:
<xs:simpleType name="AlternateRoute" >
      <xs:union>
         <xs:simpleType>
            <xs:restriction base="xs:unsignedInt">
               <xs:minInclusive value="8448"/>
               <xs:maxInclusive value="8703"/>
            </xs:restriction>
         </xs:simpleType>
         <xs:simpleType>
            <xs:restriction base="xs:string">
               <xs:enumeration value="detour where possible" id="_8449"/>
               <xs:enumeration value="no detour available" id="_8450"/>
               <xs:enumeration value="follow signs" id="_8451"/>
               <xs:enumeration value="follow detour signs" id="_8452"/>
               <xs:enumeration value="follow special detour markers" id="_8453"/>
               <xs:enumeration value="do not follow detour signs" id="_8454"/>
               <xs:enumeration value="detour in operation" id="_8455"/>
               <xs:enumeration value="follow local detour" id="_8456"/>