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Thruway Winter Traveler Advisory Terms and definitions
The following are terms used when reporting information in the Thruway Winter
Traveler Advisory System. There are three categories for reporting: road
status, pavement conditions and weather conditions. These terms give
general information and travel conditions for the reported segment.
Road Status Terms
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No Report
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There is currently no reported road condition for the segment.
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Generally Clear and Dry Conditions
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The entire length of the reporting segment appears clear and
dry. There may be isolated stretches or spot locations that indicate
snow, ice, slush or wet pavement.
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Wet Conditions
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The segment is wet with liquid water from rain or fully melted
snow.
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Snow and Ice Conditions
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Within the segment wheel paths may be visible and there is snow,
slush or ice on the pavement. This includes areas with wind blown
snow or icy spots.
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Severe Snow and Ice Conditions
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Within the segment the pavement is not visible. There is snow,
slush or ice build-up within the segment.
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Closed Portions
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Within the reporting segment there are no lanes open in one or
both directions for a portion of the segment. Report here when one
direction only is closed or when a portion of the length of a segment
is closed -- but not the whole segment.
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Return to the Thruway Winter Travel Advisory
Pavement Conditions Terms
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Snow Covered
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Within the segment there is snow on the pavement that is being
removed by the normal plowing operation.
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Icy Spots
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Within the segment there are isolated locations with ice present
on the pavement.
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Wet Spots
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Within the segment there are isolated locations with liquid water
present on the pavement.
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Flooded Areas
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Within the segment there are one or more locations with standing
water on the pavement.
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Return to the Thruway Winter Travel Advisory
Weather Condition Terms
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Fog
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Within the segment there is fog present where visibility is affected.
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Dense Fog
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Within the segment there is dense fog present where visibility
is limited to less than one quarter.
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Poor Visibility
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Any condition -- other than fog or darkness - that limits visibility
to one quarter mile or less.
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Heavy Snow
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Snow conditions where visibility within the segment is limited
to one quarter mile or where the snowfall rate exceeds one inch
per hour.
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Light Snow
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Snow conditions where visibility within the segment exceeds one
half mile or where the snowfall rate is less than one inch per hour.
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Blowing and Drifting Snow
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Within the segment there are locations where previously fallen
snow has been carried onto or across the pavement by the wind.
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Freezing Rain
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Within the segment there are locations where rain is falling
that freezes when hitting the pavement forming an ice glaze.
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Sleet
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Within the segment there is precipitation falling consisting
of pellets of ice.
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Rain
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Within the segment there are liquid water droplets falling that
remain liquid on the pavement.
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Return to the Thruway Winter Travel Advisory
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