On UK motorways, electronic matrix signals and overhead gantry signs provide vital instructions, speed limits, and hazard warnings to maintain traffic safety. Which legal requirement or required driver action correctly matches each motorway electronic signal description?
- A speed limit number displayed inside a red circular ring above your laneMandatory maximum speed limit that must not be exceeded by law
- Red flashing lights displayed across all lanes on an overhead gantryCarriageway closed ahead; stop and do not proceed past the signal
- A number displayed alongside flashing amber lights without a red ringAdvisory temporary speed limit recommending caution due to hazards ahead
- An illuminated diagonal arrow pointing downwards to the left above your laneInstruction to move safely into the lane to your left as your lane is closing ahead
Answer
The speed limit in a red ring matches the mandatory maximum speed limit; the flashing red lights across all lanes match carriageway closed / stop; the number with flashing amber lights matches the advisory temporary speed limit; and the diagonal arrow pointing left matches the instruction to move safely into the lane to the left.
Motorway electronic signals use colour and shape conventions to convey legal requirements: a red ring designates a legally binding mandatory limit, flashing amber lights indicate advisory warnings, red flashing lights across all lanes command a mandatory stop / carriageway closure, and diagonal arrows mandate lane changes ahead of closures.
Step-by-Step Solution
Key Concept
Interpreting mandatory and advisory overhead motorway matrix signals, lane closures, and required driver actions
Estimated Time:1m 0s