What Does A Green Light On A Fire Truck Mean

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Fire Truck Lighting - HG2 Emergency Lighting

Does anyone know what the multi colored lights on the side of the fire Hg2 variable visibility Chicagoareafire tanker lettered

Does anyone know what the multi colored lights on the side of the fire

lime green fire trucks « chicagoareafire.com

Fire Truck Lighting - HG2 Emergency Lighting