No. Wearing a bicycle helmet is not mandatory for adults in Denmark. It is, however, strongly recommended as it significantly reduces the risk of serious head injuries in an accident.
Source: Rådet for Sikker Trafik, https://sikkertrafik.dk
What to know before you go
These are the key rules for cycling in Denmark:
Using a handheld mobile phone while cycling is illegal and carries a fine of DKK 1,000 (approx. €135). Cycling on the pavement is forbidden. A bicycle helmet is not mandatory for adults, but is strongly recommended.
Read on, watch the animated film or test your self right now:
This short animation from the Danish Road Safety Council covers the most important cycling rules in Denmark — from hand signals and red lights to mobile phone use and helmet recommendations.
| Rule | Details |
|---|---|
| Keep to the right | Always ride as far to the right as possible |
| Bicycle lane | Use it if there is one — riding on the pavement is not allowed |
| Red lights | You must stop — jumping a red light carries a fine of DKK 1,000 |
| Mobile phone | Handheld use is illegal — fine of DKK 1,000 |
| Hand signals | Signal with your arm before turning or stopping unexpectedly |
| Left turn | Always turn left in two moves — ride straight ahead twice, do not cut diagonally |
| Riding side by side | Only allowed if it does not inconvenience others |
| Passengers | Only one person per bicycle unless a small child is secured in a child bike seat |
| Lights | Front and rear lights are required when it is dark |
| Alcohol | No fixed drink-drive limit, but cycling drunk and unsafely carries a fine of DKK 1,500 |
| Helmet | Not mandatory for adults, but strongly recommended |

Poster from the Danish Road Safety Council and the Danish Police — the six most important rules for cycling in Denmark.
| Offence | Fine (DKK) | Approx. in EUR |
|---|---|---|
| Cycling on the pavement | 700 kr. | ~€95 |
| No lights at night | 700 kr. | ~€95 |
| Jumping a red light | 1,000 kr. | ~€135 |
| Using a handheld mobile phone | 1,000 kr. | ~€135 |
| Cycling drunk and unsafely | 1,500 kr. | ~€200 |
Source: Danish Road Safety Council, based on the Danish Road Traffic Act (Færdselsloven).
Turning left in Danish traffic is different from what many visitors expect. You must divide a left turn into two straight-ahead moves — do not cut diagonally across the intersection. Here is how:
If you want to ride an electric scooter (e-løbehjul) in Denmark, specific rules apply. Only one person is allowed on the scooter and you must wear a bicycle helmet. Violations carry a fine of approximately DKK 1,000–1,500.

No. Wearing a bicycle helmet is not mandatory for adults in Denmark. It is, however, strongly recommended as it significantly reduces the risk of serious head injuries in an accident.
Source: Rådet for Sikker Trafik, https://sikkertrafik.dk
No. Using a handheld mobile phone while cycling is not allowed (fine ~€135).
Source: Rådet for Sikker Trafik, https://sikkertrafik.dk
Jumping a red light on a bicycle carries a fine of DKK 1,000 (approx. €135). Red lights apply to cyclists just as they do to car drivers.
Source: Rådet for Sikker Trafik, https://sikkertrafik.dk
No. Cycling on the pavement (sidewalk) is not allowed in Denmark. If there is a bicycle lane, you must use it. If there is no bicycle lane, you must ride on the road, as far to the right as possible.
Source: Rådet for Sikker Trafik, https://sikkertrafik.dk
There is no fixed drink-drive limit for cyclists. You can be fined DKK 1,500 (approx. €200) if you are cycling in a way that is unsafe due to alcohol intoxication. The police assess each case individually.
Source: Rådet for Sikker Trafik, https://sikkertrafik.dk
You must always turn left in two moves in Danish intersections — ride straight ahead, stop on the right side of the new road, then ride straight ahead again when the light turns green. Do not cut diagonally across the intersection.
Source: Rådet for Sikker Trafik, https://sikkertrafik.dk
Yes. Front and rear lights are required by law when cycling in the dark. Cycling without lights at night carries a fine of DKK 700 (approx. €95).
Source: Rådet for Sikker Trafik, https://sikkertrafik.dk
This guide is published by Rådet for Sikker Trafik (the Danish Road Safety Council), Denmark's national knowledge organisation for road safety. The Council provides guidance to citizens, municipalities and authorities on safe behaviour in traffic. Contact: info@sikkertrafik.dk · Tel. +45 39 16 39 39.
Last updated: April 2025 · Published by Rådet for Sikker Trafik (the Danish Road Safety Council)