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Difficulty: Very hardSpeed Limits

Unless signs indicate otherwise, a dual carriageway with a continuous system of street lighting is subject to the national speed limit of 70 mph for passenger cars.

Answer: Answer

Answer

False
A system of street lighting automatically classifies any road, including a dual carriageway, as a restricted road with a 30 mph speed limit unless speed limit signs dictate otherwise. The 70 mph limit is therefore incorrect in this scenario.

Step-by-Step Solution

1
Identify the vehicle and road characteristics from the stem.
Vehicle: Passenger car. Road: Dual carriageway with a continuous system of street lighting and no speed limit signs.
Speed limits are determined by the combination of vehicle classification and specific road conditions.
2
Evaluate the impact of the street lighting on the default speed limit.
The Highway Code states that a system of street lighting (defined as three or more lamps spaced not more than 183 metres apart) automatically creates a 30 mph limit on any road.
Street lighting legally defines a 'restricted road' regardless of the road's physical layout.
3
Determine if the physical layout (dual carriageway) overrides the lighting rule.
It does not. The 30 mph rule applies to dual carriageways with street lights unless signs specifically indicate a higher limit (such as 40, 50, or National Speed Limit).
The restricted road rule takes precedence over the default 70 mph dual carriageway limit.

Key Concept

The overriding effect of street lighting on default national speed limits
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Topics

Speed Limits

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