How to read Spanish traffic signs by shape and color

The classic theory exam trap is the sign you think you know: you answer from memory, not from the shape and color in the photo. On the road you get seconds, so read the family first (triangle, circle, rectangle), then the symbol. The Reglamento General de Circulación (RGC, Spain's General Traffic Regulations) sorts vertical signs into groups (warning, regulatory, and information signs), each with its own rules.¹

The DGT offers the theory exam in English, but signs on Spanish roads still use Spanish words (PROHIBIDO, CEDA EL PASO, SALIDA, EXCEPTO), so learn the shape-and-color code and the vocabulary together.

A point-up, red-bordered triangle means danger, not an order

• Warning (peligro). Shape: equilateral triangle, point up. Colors: red border, white field, black symbol. What it tells you: hazard ahead; slow down and be ready. Examples: a dangerous bend or a road hump. You know it is a hazard before you read the pictogram.

  P-13a

• Prohibition (prohibición). Shape: circle. Typical colors: red ring and white center (with exceptions the exam loves to test). What it tells you: do not do what the symbol shows. Typical example: No Passing R-305, white center and red border.

  R-305

• Mandatory signs (obligación). Shape: circle. Dominant color: blue field, white symbol. What it tells you: you must do what the symbol shows (mandatory direction, minimum speed, route reserved for cycles).

  R-400a

• Information signs (indicación). Shape: square or rectangle. Colors: blue, green, or brown by type. What it tells you: guidance (exit, parking, route).

  S-17

• Priority signs (prioridad). Typical shapes: inverted triangle (CEDA EL PASO, yield), red octagon (STOP), and diamond (priority roadway, R-3). What it tells you: who goes first, not a generic warning or abstract prohibition.

  R-2

  R-1

When signs disagree, start with article 133

Several signs can compete at one intersection. Article 133 of the RGC sets the order of precedence among major groups: traffic officers, temporary signage and beacons, traffic lights, road signs, and road markings.³

In the exam, warning signs warn; they don't ban or require anything on their own. When two signs in the same art. 133 group (for example, two road signs) contradict each other, the most restrictive one prevails: that is why a prohibition beats an information sign.

Two circles that look alike? One may be a mandatory sign (blue) and the other a prohibition (red ring), and they are not interchangeable. A blue circle with an arrow tells you to follow it; a red-ringed one with the symbol struck through bans that maneuver.

STOP vs CEDA EL PASO: same family, different duty

STOP R-2 and CEDA EL PASO R-1 are priority signs in the same group (RGC art. 145): they decide who goes first.⁴

• STOP R-2: red octagon with white text. You must come to a full stop at the stop line or, if there is none, immediately before the intersection, and then yield.

  R-2

• CEDA EL PASO R-1: inverted triangle, white field and red border. You must yield; stop only if you need to, so that traffic with the right of way does not have to brake or swerve.

  R-1

A prohibition is not always a white disc with a red ring: R-101 and R-308

Both groups are circles; the red ring, not the background color, decides:

• Prohibition. The clear white-center, red-border example is No Passing R-305. The exam also sets traps: Do Not Enter R-101 is a red disc with a white horizontal bar (not a white center), and no parking R-308 or no stopping R-307 are blue discs with a red ring. Reading by color alone fails on these.

  R-101

  R-305

  R-307

  R-308

• Mandatory signs. Blue disc: mandatory direction, minimum speed, route reserved for cycles (R-407).

The plaque under the sign counts too

Small rectangular plaques under or beside a main sign (white with a black border) narrow the rule: distance, stretch of road, time window or vehicle class. These are called supplementary plaques. In exam photos, read main sign + supplementary plaque together: a parking ban with a time plaque applies only in that window.⁵

Spanish words still matter on the road

Sit the exam in English if you like; the signs on the road stay in Spanish: Prohibido (forbidden), Salida (exit), Peligro (danger), Excepto (except), Obras (roadworks), Desvío (detour). Match these words to the shape-and-color group above.

Practice shape → color → symbol

Cover the symbol and name only the family (triangle / red circle / blue circle / rectangle). Then uncover it and check the pictogram. The RGC classifies signs into groups; reading the family before the symbol is the shortcut that works in the exam.¹

What to take away

• Shape and color before the pictogram: they place you in the right family in seconds.
• Point-up, red-bordered triangle = warning; blue circle without a red ring = mandatory sign; do not confuse priority signs (STOP/CEDA EL PASO) with those families.
• Article 133 orders distinct groups; when two signs of the same group contradict each other, the most restrictive one prevails: that is why a prohibition beats an information sign.
• STOP always means a full stop; CEDA EL PASO (yield) only when you must stop to let priority traffic through.
• R-101 (white bar on red disc) and R-308/R-307 (blue disc, red ring) are classic color traps. Always read the main sign and its supplementary plaque together.

Footnotes

1. Official sign catalog (shapes and meanings), RGC art. 134. ↩ ↩²

2. Warning signs, RGC art. 144. ↩

3. Order of precedence between signs, RGC art. 133. ↩

4. Priority signs, RGC art. 145. ↩

5. Supplementary plaques, RGC art. 146. ↩