Correct answer
No, because it is prohibited.
No. Article 79 of the General Traffic Regulations prohibits U-turns on motorways and dual carriageways except at designated places. A central-reservation opening for service or emergency use does not authorise an ordinary car to use it. Continue to a permitted exit or interchange and follow the signed route. A U-turn reverses the direction of travel and differs from a simple turn onto another road.
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Yes, but only to exit the motorway.
No, because it is prohibited.
Yes, when there are no obstacles preventing it.
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Glossary terms in this question
Dual carriageway
Fast road with separated carriageways per direction and at least two lanes each way, no at-grade intersections.
Motorway
Top-grade public road with separated carriageways, no direct property access, restricted to motor vehicles.
Central reservation
Longitudinal area that physically separates the two carriageways of a motorway, dual carriageway or expressway.
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