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New York State Thruway Authority

Winter Travel Advisory Information

Road Condition 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
No Report

There is currently no reported road condition for the segment.

Generally Clear and Dry Conditions

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.

Wet Conditions

The segment is wet with liquid water from rain or fully melted snow.

Snow and Ice Conditions

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.

Severe Snow and Ice Conditions

Within the segment the pavement is not visible. There is snow, slush or ice build-up within the segment.

Closed Portions

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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Pavement Conditions Terms
Wet

Within the segment there are isolated locations with liquid water present on the pavement.

Flooded

Within the segment there are one or more locations with standing water on the pavement.

Icy

Within the segment there are isolated locations with ice present on the pavement.

Snow

Within the segment there is snow on the pavement that is being removed by the normal plowing operation.

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Weather Condition Terms
Fog

Within the segment there is fog present where visibility is affected.

Dense Fog

Within the segment there is dense fog present where visibility is limited to less than one quarter.

Poor Visibility

Any condition -- other than fog or darkness - that limits visibility to one quarter mile or less.

Rain

Within the segment there are liquid water droplets falling that remain liquid on the pavement.

Freezing Rain

Within the segment there are locations where rain is falling that freezes when hitting the pavement forming an ice glaze.

Sleet

Within the segment there is precipitation falling consisting of pellets of ice.

Blowing and Drifting Snow

Within the segment there are locations where previously fallen snow has been carried onto or across the pavement by the wind.

Light Snow

Snow conditions where visibility within the segment exceeds one half mile or where the snowfall rate is less than one inch per hour.

Heavy Snow

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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