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Difficulty: MediumSpeed Limits on Motorways

Match each motorway driving situation or gantry signal to its correct speed limit rule under the UK Highway Code:

  • An overhead gantry displaying '50' enclosed within a red ringA legally enforceable mandatory maximum speed limit of 50 mph
  • A matrix sign showing '40' accompanied by flashing amber lightsAn advisory speed recommendation of 40 mph due to temporary hazard or congestion
  • A car towing a horsebox along a section with no displayed electronic limitsThe statutory national speed limit of 60 mph for vehicles drawing a trailer
  • A solo motorcycle travelling on a clear, sign-free section of motorwayThe statutory national speed limit of 70 mph for solo vehicles

Answer

The gantry with a red ring matches the mandatory 50 mph limit; the flashing amber signal matches the advisory 40 mph recommendation; the car towing a horsebox matches the 60 mph statutory towing limit; and the solo motorcycle matches the 70 mph national speed limit.
Each motorway driving scenario corresponds to a distinct Highway Code rule: red ring displays represent mandatory orders (50 mph), amber flashing lights represent advisory guidance (40 mph), towing configurations reduce the motorway statutory limit to 60 mph, and solo vehicles are permitted up to 70 mph.

Step-by-Step Solution

1
Identify the legal distinction between red ring gantry signs and flashing amber signals
Numbers enclosed in a red circle represent mandatory maximum speed limits (50 mph), whereas numbers displayed with flashing amber lights indicate advisory recommendations (40 mph).
The Highway Code establishes that signs inside red circles give compulsory orders, while amber flashing lights advise of hazards or congestion ahead.
2
Determine the default statutory national speed limits for different vehicle configurations on unrestricted motorways
Solo cars and motorcycles have a national speed limit of 70 mph, while any vehicle towing a trailer, caravan, or horsebox is legally restricted to 60 mph.
Towing adds mass and affects braking and stability, requiring a statutory 10 mph reduction on motorway carriageways.
3
Pair each scenario with its corresponding regulatory rule
All four motorway scenarios are matched to their precise legal status and speed values.
Categorizes both dynamic electronic gantry instructions and baseline statutory vehicle limits accurately.

Key Concept

Classification of UK motorway speed limits into mandatory variable limits, advisory signals, and vehicle-specific national speed limits
Estimated Time:1m 0s
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Topics

Speed Limits on Motorways

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