To understand what the color code means for you, take a look at the example below of the layout to get a better understanding.

"Color Code"
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First section explains when it will be imposed. These conditions have to be met for the road color code to change.
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Restrictions that are imposed on drivers. This section will also include conditions that will apply to all drivers, including civilian traffic and Privately Owned Vehicles.
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Approving authority. This section is mainly for military vehicles and their operation during these road conditions.



The following color code explanations can be found on the images above by clicking on the caption, then clicking on "View Original" or by downloading the PDF at the bottom of the page.

Here are the color codes and what they mean for USAG Humphreys roads and how they affect your driving experience.


Green -
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Highway conditions are normal
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No restrictions are imposed on traffic.



Amber -
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Anticipated high-density traffic causing two hour delay as measured by a normal one hour trip under green conditions (Korean holidays and other major events).

Visibility diminished to 50 meters on roads due to weather (fog, heavy rain). Patch-ice accumulation over 10 to 20 percent per kilometer of driving-surface.

2 inches or less snow accumulation over 20 to 30 percent per kilometer of driving-surface.

Prevent further damage to roads and to prevent accidents by reducing traffic during periods when road surfaces or weather conditions are hazardous and extreme caution must be used.

Area Commander deems other appropriate factors exist to warrant additional caution.
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Regulate traffic to relieve congestion. Consider the use of Traffic Control Points or barricades.

Consider rescheduling unit movements or exercises that would require serious disruption if road conditions become Red category while movements are in progress.

Where possible, spot check to ensure compliance.

Command bus service will continue to operate on schedule.

Privately Owned Vehicles, AAFES-K taxi vehicles, and contract buses are operated only for necessary trips. These vehicles will not be prevented from entering or leaving military installations.

Early dismissal and movement of any nonessential USFK personnel to their residence should be considered, but not required.
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Initiated/Downgraded by the Area and Area Commanders or higher.

Approval for "Authorized Amber" military vehicle movement is company/detachment commander, an officer with the rank of captain (O-3) or above, warrant officer in the grade of Chief Warrant Officer 3 or above, or civilian supervisors in the grade of GS-10 or KGS-10 or above.



Red -
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Anticipated high-density traffic causing at least three hour delays as measured by a normal one hour trip under Green conditions.

Visibility diminished to less than 25 meters on roads due to weather (fog, heavy rain).

Patch-ice accumulation over 30 to 50 percent per kilometer of driving-surface.

More than 2 inches of snow accumulation over at least 50 percent per kilometer of driving- surface, and near total snow coverage of driving-surface.

Area Commander deems other appropriate factors exist to warrant additional caution.
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Military vehicles (including command vehicles, staff cars, messenger, mail and ration vehicles), other than those required for essential/emergency business, will not be driven.

Buses operating on scheduled runs may proceed to the next terminal if safety conditions permit. When highway conditions constitute a safety hazard, the bus driver will report to the commander of the nearest military facility.

All U.S. Government (including NAF) vehicles required to travel during Red highway conditions, declared due to ice or snow conditions, will use tire chains or other similar device designed for heavy snow conditions.
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Initiated/Downgraded by the Area and Area Commanders or higher.

Approval for "Authorized Red" military vehicle movement is company/detachment commander, an officer with the rank of lieutenant colonel (O-5) or above, or civilian supervisors in the grade of GS-13 or KGS-13 or above.



Black -
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Anticipated or unexpected high-density traffic causing four hour or longer delays, as measured by a normal one hour trip under Green conditions.

Ice accumulation over 50 percent or more per kilometer of driving-surface.

More than 4 inches of snow accumulation over all or nearly all of driving-surface.
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Responding emergency vehicles ONLY. When snow or ice is the basis for the road condition, tire chains or equivalent are required (no waiver authorized).

All U.S. Government owned/leased/operated vehicles are prohibited from movement.

Commercial vehicles are denied access to the installation, but are allowed to exit the installation.
Privately owned vehicles entering the installation are directed to the nearest available parking space inside the installation or denied entry if they are unwilling to park.

Vehicles found in movement on the installation are ordered to park in the nearest available parking space. SOFA plated POVs are not allowed to exit the installation, unless the Installation Commander determines the areas outside the installation are in substantially safer condition.
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Initiated/ Downgraded by the Area Commander or higher.

Commanders in the grade of colonel (0-6) or above must personally authorize the use of emergency vehicles.