DGT rules in English
Lights and visibility rules in Spain
These rules connect lighting choices to visibility, glare, bad weather, and breakdowns.
Lights are for seeing and being seen
Choose the right lights for the job: lighting the road, making yourself visible, or warning others.
Watch for: The question mentions dusk, night, tunnels, poor visibility, or a broken-down vehicle.
Glare control is a safety duty
Bright lights help you see, but if they blind oncoming drivers they create danger.
Watch for: The question mentions full beam, dazzling, meeting traffic at night, or being overtaken.
Fog and heavy rain call for specific lights
In fog, heavy rain, or very low visibility, use the right lights — but don't use rear fog lights in mild conditions.
Watch for: The question mentions fog, heavy rain, snow, or very reduced visibility.
Signals announce intention before movement
Signal early enough for others to understand your intention — but signalling does not give you the right of way.
Watch for: The question mentions indicators, emergency lights, lane changes, turns, or stopping.
Practice questions for these rules
The full app links every rule to the DGT-style questions that test it — and explains why each wrong answer is wrong.
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