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SAE ATIS Committee Working Draft
ITIS Phrase Tables, Draft [issued: 04-11-09] 
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187 -
This is a draft document of the SAE ATIS committee, subject to change.
               <xs:enumeration value="cool" id="_5645"/>
               <xs:enumeration value="cooler" id="_5646"/>
               <xs:enumeration value="cold" id="_5647"/>
               <xs:enumeration value="colder" id="_5648"/>
               <xs:enumeration value="very cold" id="_5649"/>
               <xs:enumeration value="extreme cold" id="_5650"/>
               <xs:enumeration value="wind chill" id="_5651"/>
               <xs:enumeration value="dewpoint" id="_5652"/>
               <xs:enumeration value="relative humidity" id="_5653"/>
               <xs:enumeration value="temperatures close to the seasonal norm"
id="_5758"/>
               <xs:enumeration value="less extreme temperatures" id="_5759"/>
            </xs:restriction>
         </xs:simpleType >
         <xs:simpleType> 
            <xs:restriction base="xs:string">
               <xs:pattern value="\[.+\].*"/>
            </xs:restriction>
         </xs:simpleType>         
         <xs:simpleType>
            <xs:restriction base="local:Temperature" /> 
         </xs:simpleType>
      </xs:union>
</xs:simpleType>
Used By: This entry is used directly by one other data structure in this standard, a DF called
DF_ITIS_EventType <ASN> <XML>.   In addition, this item may be used by data structures in other
ITS standards.
6.44 Data Element: DE_Traffic Conditions
Use: The ITIS enumeration list commonly referred to as "Traffic Conditions," is assigned the upper byte
value of [01] (which provides for value ranges from 256 to 511, inclusive).  This list is formally called
"TrafficConditions" 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 19 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 108 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 384).  
ASN.1 Representation:
TrafficConditions ::= ENUMERATED  { 
   stopped-traffic                  (257),  
   stop-and-go-traffic              (258),  
   slow-traffic                     (259),  
   heavy-traffic                    (260),  
   traffic-building                 (261),  
   long-queues                      (262),  
   traffic-congestion               (263),  
   traffic-lighter-than-normal      (264),  
   traffic-heavier-than-normal      (265),  
   traffic-much-heavier-than-normal (266),  
   current-speed                    (267),  -- Typically followed by a value entry and a
                                            -- units entry (MPH/KPH)
   speed-limit                      (268),  -- Typically followed by a value entry and a
                                            -- units entry (MPH/KPH)
   travel-time                      (269),  -- Typically followed by a value entry and a
                                            -- units entry (seconds)
   merging-traffic                  (272),  -- NEW: Typically followed by direction
                                            -- left/right. Can be used for W4-1R and
                                            -- W4-1L signs
   -- Cancel Types
   traffic-flowing-freely           (379),  
   traffic-easing                   (380),  -- Alternative rendering: traffic clearing