Fat bike accidents and personal injury: who is liable?

31 March 2026
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Fat bike accidents and personal injury: who is liable?

  • Fatbikes are legally in a grey area: sometimes they are considered motor vehicles, sometimes not.
  • Personal injury from fatbike accidents falls under the Road Traffic Act (art. 185 WVW) and the Civil Code (art. 6:162 BW).
  • In case of personal injury, you can claim various types of damages, including medical expenses, loss of income, and pain and suffering compensation.
  • Liability in fatbike accidents is often complex and requires specialized legal knowledge.
  • Arslan & Arslan Advocaten helps you free of charge with claiming your personal injury damages, even if liability is disputed.

Fatbikes are becoming increasingly popular in the Netherlands due to their robust appearance and wide tires, ideal for offroad and city use. But what if you get involved in an accident with a fatbike? The term personal injury fatbike raises many questions, especially because the legal status of fatbikes is not always clear. Do fatbikes fall under the Road Traffic Act? Are they considered motor vehicles? And what about liability and compensation? In this article, we explain this complex matter and provide you with tools to protect your rights.

What is a fatbike and why is its legal status unclear?

A fatbike is a bicycle with extra-wide tires, often 3.8 inches or wider, designed for difficult terrains such as sand, snow, and mud. Because of these wide tires, the fatbike offers extra grip and stability. Although technically a bicycle, fatbikes sometimes have features that bring them closer to motor vehicles, such as a heavier frame and sometimes electric pedal assistance.

The legal status of a fatbike is not clearly defined in Dutch legislation. This creates a grey area, especially when an accident and personal injury are involved. The Road Traffic Act (WVW) distinguishes different types of vehicles, whereby liability and insurance obligations may differ per category. This is important because these categories determine which rules apply and which liability rules are relevant.

Fatbikes and the concept of motor vehicles in the Road Traffic Act

The Road Traffic Act 1994 (WVW) defines in article 1 motor vehicles as vehicles that are not propelled by human power and are intended to be used on the road. The question is therefore: does a fatbike fall under this definition?

Many fatbikes are traditional bicycles without a motor and therefore do not fall under the category of motor vehicles. However, when a fatbike is equipped with powerful electric pedal assistance or a motor that can drive without pedaling, there is a chance it will be considered a moped or light moped. In that case, the fatbike does fall under the motor vehicle regulations and a mandatory liability insurance (WA) is required.

Article 185 WVW stipulates that everyone who uses a motor vehicle is obliged to have liability insurance. When a fatbike falls under this regulation, it is therefore necessary that the driver has valid insurance. If the fatbike driver has no insurance and causes personal injury, the victim may possibly turn to the Motor Vehicle Guarantee Fund (Waarborgfonds Motorrijtuigen).

Conclusion: the legal classification of a fatbike depends on its technical characteristics and its use. This also makes it difficult to immediately determine liability in case of an accident.

Liability in personal injury fatbike accidents

In an accident causing personal injury involving or caused by a fatbike, the question of who is liable is essential. According to article 6:162 BW (tort), the person who acts unlawfully and thereby causes damage is liable for that damage. But how does this work in fatbike accidents?

If the fatbike is seen as an ordinary bicycle, the regular traffic rules for cyclists apply. In a collision with a car, the motorist is usually liable, but a cyclist can also be held liable if they violate traffic rules. The so-called 50 percent rule also applies here, whereby a cyclist or pedestrian with contributory negligence is compensated for at least 50% of the damage.

If the fatbike is classified as a motor vehicle, for example because it is a fast e-fatbike, stricter rules apply. The driver must then have liability insurance and is legally equated with motor vehicle drivers. In an accident, the fatbike’s insurer is liable for the damage. Without insurance, the victim can hold the Guarantee Fund liable if the perpetrator is uninsured.

In case of uncertainty or dispute, it is advisable to engage a specialized lawyer who can have a traffic accident analysis carried out to establish the cause and liability.

What damages can you claim in personal injury fatbike accidents?

Personal injury damages consist of all damage you suffer as a result of the accident. In fatbike accidents, the following damage items may be relevant:

  • Medical expenses: costs for hospital treatment, physiotherapy, medication, and any aids.
  • Loss of income: the differences between your income before and after the accident, including any future income loss due to permanent injury.
  • Household help: compensation for help you need in daily life, for example with cleaning, cooking, or shopping.
  • Travel expenses: costs for transportation to doctors, therapists, and the hospital.
  • Pain and suffering compensation: compensation for immaterial damage such as pain, grief, anxiety, and loss of enjoyment of life. In fatbike accidents with serious injury, pain and suffering compensation can range from €5,000 to more than €50,000, depending on the severity and consequences of the injury (see also our pain and suffering page).
  • Future damages: in case of permanent injury, future costs and loss of earning capacity are also included.

It is important that you properly map out all these damage items and support them with evidence. An experienced personal injury lawyer assists you with this and ensures you receive full and fair compensation.

What to do after a fatbike accident?

Immediately after a fatbike accident, it is important to take the right steps to safeguard your rights:

  • Medical help: always see a doctor, even if you think your complaints are minor. Sometimes symptoms appear later.
  • Documentation: take photos of the situation, the damage to the fatbike, and any other involved vehicles.
  • Collect information: note the contact details of those involved and witnesses.
  • Keep receipts: keep all invoices and receipts related to the accident.
  • Engage a personal injury lawyer: the sooner you seek legal help, the better your position in the damage settlement.

By carefully following these steps, you increase the chance of a successful damage claim.

How can Arslan & Arslan Advocaten help you with personal injury fatbike cases?

Arslan & Arslan Advocaten has extensive experience with personal injury cases arising from special means of transport such as fatbikes. We understand the legal complexity and know exactly how to establish liability, even when there is doubt about the vehicle’s status.

Our services include:

  • Establishing liability and gathering evidence;
  • Calculating and claiming all relevant damage items;
  • Negotiating with insurers and opposing parties;
  • If necessary, conducting court proceedings;
  • Ensuring you have financial peace of mind during the process, for example by requesting advances.

Thanks to our knowledge of the Road Traffic Act, the Civil Code, and case law, we are strong even if insurers try to dispute the claim. Moreover, our assistance is free for you, because under article 6:96 BW the costs of legal assistance are reimbursed by the liable party.

With offices in Rotterdam, Amsterdam and The Hague, we are always nearby. Feel free to contact us to discuss your situation.

Frequently asked questions about personal injury fatbike

1. Is a fatbike always insured as a motor vehicle?

Not always. If a fatbike has no motor or only provides pedal assistance up to 25 km/h, it is usually considered a bicycle and no liability insurance is required. If the fatbike is equipped with a faster motor or other propulsion, it can be classified as a motor vehicle and insurance is mandatory according to art. 185 WVW.

2. Can I get pain and suffering compensation after a fatbike accident?

Yes, in case of personal injury from a fatbike accident, you can claim pain and suffering compensation. The amount depends on the severity of the injury, the impact on your daily life, and the degree of pain and grief (art. 6:106 BW). Our pain and suffering page provides examples of amounts.

3. What if I am partly at fault for the accident?

You can usually still receive compensation. In case of contributory negligence, the compensation is proportionally reduced, but cyclists and pedestrians receive at least 50% of the damage compensated (the 50 percent rule). This also applies to fatbike riders who are considered cyclists.

4. What can I do if the other party has no insurance?

If the liable party has no insurance, you can hold the Guarantee Fund liable. This fund compensates damage caused by uninsured motor vehicles, which in some cases also applies to light moped and moped accidents.

Read also

Feel free to contact Arslan & Arslan Advocaten if you have suffered personal injury from a fatbike accident. We offer free and expert legal support to recover your damages as fully as possible. You have come to the right place for clear information, personal attention, and decisive assistance.


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