DGT Rules Speed, distance, and safety margins

DGT rules in English

Speed limits in Spain explained in English

These rules turn speed and distance questions into stopping space and reaction time.

Speed questions are often visibility questions

Safe speed depends on what you can see and stop within — not just the posted limit.

Watch for: The question links speed to visibility, bends, weather, night, or road conditions.

Following distance buys reaction time

Leave enough space behind the vehicle ahead to react, brake, and stop safely.

Watch for: The question mentions safety distance, following distance, or the car ahead stopping.

Low grip means bigger margins

On wet, icy, or loose surfaces, you need more space and gentler steering and braking.

Watch for: The question mentions wet road, ice, snow, gravel, oil, aquaplaning, or tyre grip.

Stopping distance has two parts

Stopping distance is reaction distance (before braking) plus braking distance (after braking begins).

Watch for: The question asks about reaction time, braking distance, or total stopping distance.

Speed limits are ceilings, not targets

Speed limits are the maximum allowed — conditions often mean you should go slower.

Watch for: The question asks whether to drive at the maximum in traffic, bad weather, or near crossings.

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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