Logo
Dutch Road Signs and Traffic Sign Meanings

Prepare for a New Rule Starting in a Few Kilometers

OB-401 - Rule Applies After … km Dutch road sign meaning

The OB-401 'Rule Applies After... km' traffic sign in the Netherlands indicates that a new traffic rule or restriction will become effective after a specific distance, shown in kilometers. This advanced warning is crucial, especially on high-speed roads, as it allows drivers ample time to prepare for the upcoming change in regulations. You should use this time to adjust your speed, plan lane changes, and be ready to comply fully from the indicated start point onwards.

Deciphering the 'Rule Applies After…' Supplementary Plate (OB-401)

Understanding this supplementary plate is crucial for your Dutch driving theory test, as it signifies when a main traffic rule will begin further along the road. Correct sign interpretation allows you to safely anticipate upcoming changes and adjust your driving behaviour proactively.

Definition of OB-401

The after distance plate is a rectangular supplementary panel that shifts the starting point of the main sign to a place further along the road. It is especially useful on high speed roads like an autosnelweg, where drivers need time to react safely to upcoming changes. The distance on the plate shows how far ahead the rule will begin, and an extra sign or marker usually indicates the exact start location.

Meaning of OB-401

This plate tells you that the rule on the main sign will only start after the distance shown, for example after 200 m or after 2 km. It gives you advance warning so you can calmly prepare for a new speed limit, lane use rule, or restriction further ahead. You should already plan lane changes and adjust your driving so you can comply exactly at the start point.

Allowed actions for OB-401

Use the stated distance to prepare calmly for the upcoming ruleChange lane in good time so that you are correctly positioned at the start pointAdjust your speed gradually so that you comply when the rule beginsFollow existing rules until you reach the location where the new rule startsWatch for the exact start sign or marker that indicates the rule is now in force

Prohibited actions for OB-401

Apply the new rule immediately before the stated distance has passedDelay preparation until just before the rule begins, creating unsafe maneuversIgnore the upcoming restriction on an autosnelweg or other high speed roadMiss the start marker and then continue driving as if the old rule still applied

OB-401 - Rule Applies After … km road sign FAQ

Get clear, practical answers to the most common questions about the OB-401 - Rule Applies After … km 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.

What does the OB-401 'Rule Applies After... km' sign mean?

This sign means that a specific traffic rule, prohibition, or obligation will begin at the distance indicated on the sign (e.g., 'after 2 km'). It's an advance warning sign to give you time to prepare.

How should I react when I see the OB-401 sign?

When you see this sign, you should mentally prepare for the upcoming rule. This means you can start planning to change lanes if necessary or begin to progressively adjust your speed so you are ready to comply by the time you reach the stated distance.

What is a common mistake learners make with the OB-401 sign?

A common mistake is to ignore the sign until the last moment, or to assume the rule applies immediately. The purpose of this sign is to give you advance notice, so delaying your preparation until the last moment defeats its purpose. Always be ready to comply from the indicated start point.

Are there other signs related to the OB-401 sign?

Yes, there can be advance repeaters of the same sign to reinforce the message. The actual legal effect of the upcoming rule begins precisely at the distance marked on the sign, not before.

Why is this sign important for the Dutch driving theory exam?

This sign tests your ability to anticipate and prepare for changes in traffic rules. The exam might present a scenario where you see this sign and have to choose the correct action, emphasizing proactive driving rather than reactive behaviour.

OB-401 - Rule Applies After … km road sign image

A clear reference image of the OB-401 - Rule Applies After … km road sign used in the Netherlands.

OB-401 - Rule Applies After … km road sign

Other names for the OB-401 - Rule Applies After … km

The OB-401 - Rule Applies After … km road sign may also be known by these alternative names or terms.

Starts in … kmTakes effect after distanceAdvance start markerFuture start plate

Supplementary Plates (OB) road sign category

The OB-401 - Rule Applies After … km road sign is part of the Supplementary Plates (OB) category, which groups together signs with similar rules and functions.

Reinforce Your Knowledge with Similar Road Signs

Comparing signs like 'Rule Applies After … km' with other supplementary plates helps solidify your understanding of Dutch traffic rules. This focused approach aids sign recognition and reduces confusion, crucial for passing your theory test revision.

OB-01 - Only Applies to Horse Riders road sign

Only Applies to Horse Riders

This sign means the rule applies ONLY to horse riders.

Supplementary Plates (OB)OB-01
OB-02 - Only Applies to Cyclists road sign

Only Applies to Cyclists

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

Supplementary Plates (OB)OB-02
OB-03 - Only Applies to Moped Riders road sign

Only Applies to Moped Riders

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

Supplementary Plates (OB)OB-03
OB-04 - Only Applies to Cyclists and Moped Riders road sign

Only Applies to Cyclists and Moped Riders

This Sign Exclusively Targets Cyclists and Moped Riders

Supplementary Plates (OB)OB-04
OB-05 - Only Applies to Agricultural Vehicles road sign

Only Applies to Agricultural Vehicles

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

Supplementary Plates (OB)OB-05
OB-06 - Only Applies to Motorcyclists road sign

Only Applies to Motorcyclists

OB-06: This Sign Strictly Applies Only to Motorcyclists

Supplementary Plates (OB)OB-06
OB-07 - Only Applies to Motorcyclists and Motorists road sign

Only Applies to Motorcyclists and Motorists

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

Supplementary Plates (OB)OB-07
OB-08 - Only Applies to Motor Vehicles with >2 Wheels road sign

Only Applies to Motor Vehicles with >2 Wheels

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

Supplementary Plates (OB)OB-08

Ready to Master Dutch Road Signs? Explore More Study Options

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
CTA Decorative Squares

Dive into Dutch road sign knowledge

Dutch Driving Theory B courseDutch Driving Theory AM courseDutch Motorcycle Theory A courseDutch A1 Motorcycle Theory courseDutch Motorcycle Theory (A2) courseSpeed Signs (A) Dutch road sign categoryWarning Signs (J) Dutch road sign categoryPriority Signs (B) Dutch road sign categoryInformation Signs (L) Dutch road sign categoryOB-02 Only Applies to Cyclists Dutch road signOB-401 Rule Applies After … km Dutch road signBuilt-Up Area Signs (H) Dutch road sign categoryOB-12 Only Applies to Bus Drivers Dutch road signSupplementary Plates (OB) Dutch road sign categoryOB-01 Only Applies to Horse Riders Dutch road signOB-03 Only Applies to Moped Riders Dutch road signOB-14 Only Applies to Tram Drivers Dutch road signOB-303 Towing Regulation in Effect Dutch road signOB-06 Only Applies to Motorcyclists Dutch road signOB-11 Only Applies to Lorry Drivers Dutch road signClosure & One-Way Signs (C) Dutch road sign categoryOB-411 Rule Applies Over the Next … m Dutch road signMandatory Direction Signs (D) Dutch road sign categoryParking and Stopping Signs (E) Dutch road sign categoryDirection & Route Guidance (K) Dutch road sign categoryOvertaking & Lane Directives (F) Dutch road sign categoryArea, Road & Path Designations (G) Dutch road sign categoryOB-05 Only Applies to Agricultural Vehicles Dutch road signOB-13 Only Applies to Lorry and Bus Drivers Dutch road signOB-207 Only Applies on Indicated Days/Times Dutch road signOB-108 Does Not Apply to Destination Traffic Dutch road signOB-10 Only Applies to Vehicles with a Trailer Dutch road signOB-04 Only Applies to Cyclists and Moped Riders Dutch road signOB-101 Overtaking Agricultural Vehicles Allowed Dutch road signOB-09 Only Applies to Motorists (Passenger Cars) Dutch road signOB-07 Only Applies to Motorcyclists and Motorists Dutch road signOB-215 Only Applies in the First Half of the Month Dutch road signOB-08 Only Applies to Motor Vehicles with >2 Wheels Dutch road signOB-503 Crossing Cyclists & Mopeds from Both Directions Dutch road signOB-54 ‘Uitgezonderd’ — Excepted (Generic Category Plate) Dutch road sign