The OB-01 road sign, often seen in rural or recreational areas, is an auxiliary plate that modifies the main traffic sign it's attached to. It specifies that the prohibition, obligation, or warning indicated by the primary sign is exclusively for horse riders. While this sign indicates a rider-specific rule, all other road users must still adhere to the general traffic rules or any other signs present. Understanding this sign is key to correctly interpreting situations involving equestrian traffic.
Understanding this supplementary plate (OB-01) is essential for accurate road sign interpretation in the Netherlands, as it distinctly indicates that the associated main sign's requirement applies exclusively to horse riders. Correctly recognizing this traffic sign explanation prevents confusion among drivers and helps ensure all road users follow the specific Dutch traffic rules applicable to their category during the theory test.
The applies to horse riders plate is fixed directly under a main sign, for example a prohibition on entering or a mandatory direction, to show that the rule is intended only for equestrian traffic. Other road users such as motorists, cyclists or pedestrians are not affected unless another plate names their category. Drivers should always read supplementary plates carefully, especially on rural roads and bridleway crossings where several categories of path users may be present.
This supplementary plate indicates that the rule shown on the main sign applies specifically to mounted horse riders and often also to people leading a horse beside them. It clarifies which road users must follow the prohibition, obligation or warning, so other categories can follow the general traffic rules or other nearby signs that apply to them.
Get clear, practical answers to the most common questions about the OB-01 - Only Applies to Horse Riders 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 Dutch driving theory exam in the Netherlands.
The OB-01 sign is an auxiliary plate used with other traffic signs. It clarifies that the instruction (like a speed limit, prohibition, or mandatory action) on the main sign is intended only for horse riders and persons leading horses. Other road users are not affected by this specific rider-related rule.
If you are driving a car and see the OB-01 sign below a speed limit sign, the speed limit shown does not apply to you. You should follow the general speed limit for the road or any other applicable signs. The speed limit is only for horse riders.
Yes, sometimes an auxiliary plate might say 'uitgezonderd' (excepted) followed by 'Only Applies to Horse Riders'. In such cases, horse riders would be exempt from the main sign's rule, while other traffic must still comply.
A common mistake is assuming the main sign's rule applies to all vehicles, including your car. Always remember that the OB-01 sign specifically restricts the application of the main sign to horse riders only. If no other sign applies to you, follow the general rules.
No, the OB-01 sign specifically refers to 'horse riders' (ruiters). Cyclists have their own specific road signs and rules. If a sign were intended for cyclists, it would use different wording or symbols.
A clear reference image of the OB-01 - Only Applies to Horse Riders road sign used in the Netherlands.

The OB-01 - Only Applies to Horse Riders road sign may also be known by these alternative names or terms.
The OB-01 - Only Applies to Horse Riders road sign is part of the Supplementary Plates (OB) category, which groups together signs with similar rules and functions.
Understanding how similar road signs differ is crucial for accurate recognition and fewer errors during your theory test revision. Comparing 'applies to horse riders' with other supplementary plates sharpens your recall of specific rules, aiding effective traffic sign comparison.

The OB-02 sign means the rule applies exclusively to cyclists.

This sign means the rule ahead exclusively applies to moped riders.

This Sign Exclusively Targets Cyclists and Moped Riders

Understand the OB-05 sign: This restriction applies only to agricultural vehicles.

OB-06: This Sign Strictly Applies Only to Motorcyclists

This sign OB-07 means the following rule applies only to motorcycles and passenger cars.

OB-08: This Sign Only Applies to Motor Vehicles with More Than Two Wheels

The OB-09 sign means a rule specifically targets passenger cars, not all vehicles.
After reviewing the full list of Dutch road signs, deepen your understanding by exploring signs organized by category or practicing with targeted questions. This systematic approach ensures you fully grasp every sign's meaning and application, preparing you thoroughly for your CBR driving theory exam.
View All Dutch Road Signs