Safe Following Distance Rules in Spain

In Spain, keep a safe following distance of at least 2 seconds behind the vehicle in front, and 3 or more seconds when the road is wet. In tunnels, leave at least 100 metres or 4 seconds. The 2-second rule is the practical method the DGT expects you to use, and it appears often in the theory test. Not keeping enough distance is a serious offence that costs you 4 points.

In the DGT syllabus this belongs to the chapter on Speed, which explains the rule alongside the exam questions that test it.

Key facts at a glance

• Dry roads: at least a 2-second gap.
• Rain or wet surface: 3 or more seconds.
• Tunnels: at least 100 m or 4 seconds (over 3,500 kg: 150 m or 6 seconds).
• Penalty: not keeping a safe distance costs 4 points.
• Behind a cyclist: from 1 October 2026, keep at least 5 m in the same lane.
• Best method: count seconds, not metres, because seconds adjust to your speed.

What is the 2-second rule and how do you count it?

The 2-second rule is a simple way to keep a safe gap without doing maths at the wheel. Pick a fixed point ahead, such as a sign, a bridge, or a road marking. When the car in front passes it, start counting: "one thousand and one, one thousand and two". If you reach the point before you finish counting, you are too close and should ease off.

Why seconds instead of metres? Because a fixed distance in metres means very different things at 50 km/h and at 120 km/h. Time adjusts automatically. Two seconds gives you enough space to react and brake at any legal speed, which is exactly why the DGT teaches it this way. Exact metre figures you might see are only illustrative; the timing method is what you apply on the road.

A safe gap is not about being timid. It is the space that lets you see hazards developing, brake smoothly, and avoid the harsh, last-second stops that cause rear-end crashes.

How much distance do you need in the rain?

When the road is wet, extend your gap to at least 3 seconds. Rain lengthens braking distances because tyres grip less on a wet surface, and spray from other vehicles cuts your visibility. The DGT advice is clear: in rain or on a wet road, you double the effort you put into keeping space. Three seconds is the working minimum, and more is better in heavy rain.

The same logic applies to other poor conditions. Fog, snow, ice, and loose gravel all reduce grip or visibility, so you stretch the gap further. If you cannot see far enough to stop within the clear distance ahead, you are going too fast for the conditions, whatever the speed limit says.

Remember that the vehicle behind you may not be leaving the same space. Keeping your own generous gap gives you room to brake gently, which helps the driver behind stop too.

What is the following distance in tunnels?

In a tunnel, keep at least 100 metres or 4 seconds behind the vehicle in front. For vehicles over 3,500 kg, that rises to 150 metres or 6 seconds. Tunnels concentrate risk: there is nowhere to swerve, limited light, and a breakdown or fire ahead can block the whole carriageway. Extra distance buys you time to see the problem and stop safely.

Turn on your dipped headlights before you enter, however short the tunnel looks, and do not overtake unless the tunnel has two or more lanes in your direction. If traffic stops inside, keep your distance from the car ahead so you are not boxed in. For the full set of rules on lights, breakdowns and refuges, see our guide to tunnel driving rules in Spain.

Why is tailgating so dangerous, and how is it penalised?

Tailgating is dangerous because it removes your reaction time. Following too closely is a serious traffic offence in Spain, and not keeping a safe distance costs you 4 points on your licence. A driver reacts, then the car needs distance to stop; if that distance is not there, you hit the vehicle in front the moment it brakes hard.

Rear-end collisions are among the most common crash types, and most of them come down to one thing: the following car was too close to stop in time. Tailgating also raises stress, tempts risky overtakes, and gives you almost no view of the road beyond the vehicle ahead.

There is a second reason to hang back. The closer you sit, the less of the road you can read. Drop back and you see brake lights further up the queue, spot hazards earlier, and drive more smoothly. Good distance is not slow driving; it is calm, controlled driving that the examiner wants to see.

What is the 5 metre rule behind cyclists?

From 1 October 2026, under Real Decreto 518/2026, drivers must keep at least 5 metres behind a cyclist when you are in the same lane. The change is part of a wider package to protect vulnerable road users. If you cannot leave that space and cannot overtake safely, you hold back until it is safe to pass.

The same reform sets out how to overtake a cyclist: leave at least 1.5 metres of side clearance and reduce your speed. We cover the full method, including when you may cross a solid line, in our guide to overtaking cyclists in Spain. Treat these dates as upcoming and confirm the detail once the rules are in force.

Frequently asked questions

What is the safe following distance in Spain?

Leave at least a 2-second gap behind the vehicle in front on dry roads. Increase it to 3 or more seconds in rain, and to at least 100 metres or 4 seconds in tunnels. The 2-second rule is the practical method the DGT expects.

How do I count a 2-second gap?

Pick a fixed point ahead, like a sign or bridge. When the car in front passes it, count "one thousand and one, one thousand and two". If you reach the point before you finish, you are too close and should drop back.

How many points do you lose for not keeping distance?

Not keeping a safe following distance is a serious offence and costs 4 points on your licence. It appears in the theory test, so learn the 2-second rule and the wet-weather and tunnel figures before you sit the exam.

What distance should I keep behind a cyclist?

From 1 October 2026, under Real Decreto 518/2026, keep at least 5 metres behind a cyclist in the same lane. To overtake, leave at least 1.5 metres of side clearance and slow down. See our overtaking cyclists guide for the full rules.

Does the following distance change for larger vehicles?

Yes. In tunnels, vehicles over 3,500 kg keep at least 150 metres or 6 seconds, compared with 100 metres or 4 seconds for cars. Heavier vehicles need more room because they take longer to stop.

Sources

• Reglamento General de Circulacion (Real Decreto 1428/2003).
• Real Decreto 518/2026, en vigor desde el 1 de octubre de 2026: BOE-A-2026-13889.

Last updated: August 2026.