While driving on a motorway, you pass an overhead gantry displaying the number '50' accompanied by flashing amber lights. Shortly afterwards, the next gantry displays the number '40' enclosed within a solid red circle. Which of the following statements correctly describes the legal status and driver requirements for these two signals?
- AThe 50 mph sign with flashing amber lights is a mandatory limit enforced by cameras, while the 40 mph sign in a red circle is merely an advisory guideline.
- The 50 mph sign provides an advisory speed recommendation, whereas the 40 mph sign inside a red circle is a mandatory speed limit that must not be exceeded.Answer
- CBoth signs represent mandatory legal limits, but the 40 mph limit applies exclusively to vehicles towing trailers or heavy goods vehicles.
- DBoth signs are advisory recommendations, meaning drivers are legally permitted to maintain the national speed limit of 70 mph throughout.
Answer
The 50 mph sign provides an advisory speed recommendation, whereas the 40 mph sign inside a red circle is a mandatory speed limit that must not be exceeded.
On UK motorways, matrix signals displaying a speed limit accompanied by flashing amber lights provide a temporary advisory (recommended) maximum speed to warn of hazards or congestion ahead. In contrast, any speed limit displayed within a solid red ring is a mandatory maximum limit that is legally enforceable by police and speed cameras. Drivers are legally required not to exceed the mandatory limit.
Step-by-Step Solution
Key Concept
Distinction between advisory matrix signals (amber flashing lights) and mandatory variable speed limits (red rings) on UK motorways
Estimated Time:1m 15s