The R-400a road sign is a mandatory instruction sign in Spain that clearly tells you that you must turn right at this point. This sign is used to direct traffic flow, often at junctions or complex intersections, ensuring drivers follow a specific, safe path. Ignoring this sign can lead to dangerous situations, such as entering oncoming traffic or restricted areas, and is a common pitfall in driving theory exams. Always obey the direction indicated.
This R-400a sign mandates a right turn, crucial for navigating Spanish traffic rules correctly. Master its meaning for your theory test revision and ensure safe driving by understanding this mandatory sign's precise instruction.
The sign for turn right tells road users what they are required to do rather than what they must avoid. Spanish mandatory signs are used where the road design, lane arrangement, or traffic management demands a specific direction, route, or traffic class. Ignoring the instruction can put you into conflict with opposing traffic, protected users, or reserved infrastructure. Always follow the symbol itself first, then use arrows, lane markings, and panels to understand the exact path or maneuver that is compulsory.
This mandatory sign requires road users to follow turn right. It tells you which maneuver, direction, route, or lane use is compulsory at that point.
Get clear, practical answers to the most common questions about the R-400a - Turn right road sign. Learn how the sign works, what rules it represents, and how it affects real driving situations. This FAQ strengthens your understanding and supports accurate decision making for the Spanish driving theory exam in Spain.
The R-400a sign is a mandatory directive. It means you are required to turn right at the location where the sign is posted. You must follow this direction and cannot go straight, turn left, or make a U-turn if this sign is present.
Failing to comply with the R-400a 'Turn Right' sign is a traffic violation. It can lead to dangerous situations by forcing you into conflicting traffic, such as oncoming vehicles or pedestrians, and will result in a failing grade in your theory exam if you indicate incorrect behaviour.
While the R-400a sign mandates a right turn, accompanying arrows and lane markings provide specific details about how and where to execute that turn. For example, an arrow might indicate which lane you must use for the compulsory right turn. Always follow the most specific instruction for your lane and vehicle.
The R-400a sign can be found on various types of roads in Spain, including urban streets, rural roads, and sometimes on approaches to motorways or dual carriageways where specific directional control is needed. Its purpose is to enforce a mandatory maneuver for traffic management and safety.
A common exam trap is assuming you have a choice of direction or can go straight if a right turn is mandated. The R-400a sign leaves no room for interpretation; turning right is compulsory. Learners sometimes incorrectly select an option that includes going straight or turning left when this sign is displayed in a scenario.
A clear reference image of the R-400a - Turn right road sign used in Spain.

The R-400a - Turn right road sign may also be known by these alternative names or terms.
The R-400a - Turn right road sign is part of the Mandatory Signs category, which groups together signs with similar rules and functions.
Comparing similar road signs helps you distinguish subtle differences, improving recall and reducing exam errors. Engage in focused traffic sign comparison for effective theory test revision and clearer recognition of road rules.

Mandatory 'Go Straight' Sign (R-400c): Know Your Compulsory Direction

Mandatory Turn Left: Know What This Sign Demands on Spanish Roads

The R-401b 'Keep Left' Sign: Your Compulsory Direction in Spain

Mandatory R-401c Sign: You Must Pass On This Side
You've explored the complete list of Spanish road signs. Now, deepen your understanding by reviewing specific sign groups or testing your knowledge with practice questions. Fully prepare for your DGT driving theory exam and confidently navigate Spanish roads.
Browse All Spanish Road Signs