The D104 road sign indicates that mopeds and speed-pedelecs must pass this point on the left. This sign is crucial for managing traffic flow and ensuring safety, particularly on shared paths or complex road layouts where right-side passage might be unsafe or impractical. Drivers should be aware of this sign to anticipate the movement of moped traffic and ensure they maintain a safe distance and respect the designated path.
Learn the key details of the D104 - Mopeds Pass on the Left road sign, including its function, what it communicates to drivers, and how it applies in real traffic situations in the Netherlands. Use this overview to understand the sign clearly and recognise it confidently during the Dutch driving theory exam.
D104 is a blue mandatory direction sign for mopeds and speed-pedelecs that indicates they must pass on the left side of the sign. The arrow prescribes the side on which the vehicle must overtake the obstruction or island along its route. You will often encounter it where special moped facilities run to the left of a refuge, or where designers need to separate moped flows from other traffic movements at a junction or crossing.
This sign requires moped riders and speed-pedelec users to pass to the left-hand side of the sign. It is used where the safe and legal route for these vehicles lies to the left of an obstacle, separation island, or kerb extension. Riders must move to the correct position in time, keep left of the panel, and follow the indicated track without cutting the corner.
Get clear, practical answers to the most common questions about the D104 - Mopeds Pass on the Left 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 D104 sign specifically instructs riders of mopeds and speed-pedelecs that they must pass on the left side of the sign. It's an informational sign guiding traffic, ensuring clear routes for these vehicles.
The primary action prohibited for mopeds and speed-pedelecs is passing on the right side of the D104 sign. Additionally, crossing into an opposite lane if it's not designated for them would also be implicitly prohibited to maintain safe passage.
You're likely to see the D104 sign in areas where the road or path design necessitates a specific direction for mopeds. This could be at junctions, along cycle paths shared with mopeds, or where a right turn would be hazardous or impossible for them.
As a car driver, the D104 sign alerts you to the presence of mopeds or speed-pedelecs that will be passing on the left. You should be extra vigilant, especially if you are turning or merging, and be prepared for these vehicles to approach from the left side of the sign. Maintain awareness of their designated route.
Yes, understanding the D104 sign is important for car drivers during the theory test. While it directly instructs mopeds, knowing what other road users are required to do helps you anticipate traffic behaviour, predict potential hazards, and drive more safely in mixed traffic conditions.
A clear reference image of the D104 - Mopeds Pass on the Left road sign used in the Netherlands.

The D104 - Mopeds Pass on the Left road sign may also be known by these alternative names or terms.
The D104 - Mopeds Pass on the Left road sign is part of the Mandatory Direction Signs (D) category, which groups together signs with similar rules and functions.