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A new road marking, unofficially dubbed "dragon's teeth" (dientes de león), is appearing on Spanish roads and drivers should take note. These white triangles, painted along the edge of the lane, are a visual cue designed to slow down traffic and could result in a €200 fine for those who ignore them.

What Are They and What Do They Do?

The triangles, officially classified as M-8.1 markings, are spaced about 1.5 meters apart and typically cover the 30 meters leading up to a built-up area. Their purpose is to create an optical illusion, making the road appear narrower than it is. This subconscious effect prompts drivers to reduce their speed without the need for physical speed bumps or rumble strips. The Dirección General de Tráfico (DGT) states that the goal is to reduce accidents in areas where fast-moving traffic meets vulnerable road users, such as pedestrians and cyclists.

Where You Will See Them

These markings are being implemented at the entry points of towns and villages, as well as near schools, hospitals, residential streets, and crossings—in essence, any location where drivers need to transition from open-road speeds to urban speeds. The DGT has been trialing the markings in various municipalities, with Nava de Roa (Burgos) being one of the first to adopt them. The use of these markings is spreading as local councils update their road paint.

The Rule and the Fine

The General Traffic Regulations specify that the M-8.1 marking indicates that drivers must "sensibly reduce" their speed and exercise extra caution. The practical instruction is clear: when you see the "dragon's teeth," ease your speed down to 30 km/h unless a different limit is posted. Drivers who fail to comply and continue at a higher speed risk an administrative fine of up to €200.

Tips for Drivers

To avoid a fine and drive safely in these areas, drivers should:

• Spot the run-up: The triangles are placed well in advance of the first houses or junctions, so recognize them as an early warning sign.

• Confirm the speed: Look for a speed limit sign or a painted '30' on the road surface as you enter the urban area.

• Maintain a slow pace: The intent is not a quick brake but to maintain a steady speed of 30 km/h until signs indicate a change.

• Be aware of people: These zones are chosen to protect children, pedestrians, and cyclists, so stay alert and be prepared to yield.

The "dragon's teeth" are part of a broader refresh of Spain's traffic signage and markings, aimed at improving road safety. For tourists and residents alike, understanding these simple but crucial markings is essential for safe driving and avoiding a fine.