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stop signs have been installed on Virginia’s highways as part of a gradual changeover from the yellow and black combination, the State Highway Department has aftnounced.
The switch to the new sign, which highway engineers believe provides a more effective warning, is being made gradually as the yel— low and black signs wear out or are damaged and have to be replaced.
Highway engineers said the use. of stop signs having white letters on a red background has proven very effective in other states. Because red is commonly associated
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