Answer :
Final answer:
These signs indicate an authorized vehicle opening on a divided highway and warn other vehicles not to use it.
Explanation:
The purpose of these signs is to indicate an authorized vehicle opening on a divided highway. These openings are only for certain vehicles such as police cars, ambulances, snow plows, construction/maintenance equipment, and other emergency vehicles. The signs serve as a warning to other types of vehicles that they are not allowed to use this opening.
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