As the sign system is intended to display the alert or recommended by a special user installed the alternatives. Like speed limits, closing of traffic This place, traffic and other channels, via user awareness and vigilance in driving to averted a potentially dangerous by the command to display the symbol.From the order to the officer by the control center to the edge of the road on the left hand side of the line the way. Distances to and 500 meters for about 280 points.
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