Correct answer
A road reserved for the Spanish automóvil vehicle category.
S-3 marks the start of a road reserved for the Spanish automóvil category, including cars, motorcycles, buses and lorries. This category excludes mopeds, cycles and special vehicles. It does not mean cars only or every motorised vehicle, and does not turn the road into a motorway or dual carriageway.
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A dual carriageway.
A motorway.
A road reserved for the Spanish automóvil vehicle category.
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Sign S-3: a road reserved for motor vehicles
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Glossary terms in this question
Moped
Two or three-wheeled vehicle with engine displacement ≤50 cc and a top design speed of 45 km/h.
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.
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