Two people on one bicycle: When adults are allowed to ride along

Riding two people on one bicycle is not categorically prohibited in Germany. However, the passenger may only sit on a bicycle that was built and equipped to carry passengers. In addition, the rider must be at least 16 years old. A standard luggage rack, top tube or cargo platform without a seating device does not automatically meet this requirement.

The short answer under Section 21 of the German Road Traffic Regulations (StVO)

Section 21 (3) StVO permits people to be carried on bicycles by riders aged at least 16, provided that the bicycle was also built and equipped to carry passengers. Since the 2020 amendment to the StVO, this can include teenagers and adults; the rule is no longer limited to small children.

“Built and equipped” requires both: the vehicle concept must be able to carry the additional person, and the necessary equipment must be provided for this purpose. Placing a cushion on a rack after the fact does not turn a standard bicycle into a passenger bicycle. The decisive factors are the operating instructions, manufacturer approval, permitted total mass and intended seating position.

Which bicycles are generally suitable?

Examples include longtail bicycles, tandems or certain cargo bikes expressly approved for carrying passengers. A tandem has two designated seating and pedalling positions. A longtail may have a sturdy rear section with a seat cushion, handhold, footrests and spoke protection. A front-loading cargo bike may be equipped with a transport box featuring approved seating positions.

The type of vehicle alone is not enough. Not every cargo bike may carry adults, and not every extended luggage rack is a passenger seat. Look in the instructions for the number of passengers, permitted mass, seating configuration and required accessories. If this information is missing, ask the manufacturer or specialist retailer instead of inferring suitability from a product photo.

Why the luggage rack is usually not a seat

A standard luggage rack is designed for bags or a limited load. Its load capacity may be significantly lower than the weight of an adult. It also often lacks a suitable seat, footrests and protection from spokes or brake components. The stated load limit only proves what load the rack may carry; it is not automatic approval for carrying passengers.

No one may improvise a ride on the top tube or handlebars either. The additional person impairs steering, visibility and braking, may slip off and changes the centre of gravity in an uncontrolled way. A short trip to the station is not an exception legally or technically.

Check total mass and axle loads

Add together the bicycle, battery, rider, passenger, luggage, lock and accessories. The total must remain below the bicycle’s permitted total mass. Seats, footrests, racks or boxes may also have their own limits. The lowest applicable approval always applies. A powerful motor does not increase the frame, tyre or brake limit.

Weight distribution is equally important. A heavy passenger positioned far behind the rear axle can unload the front wheel and make steering imprecise. With a front-loading transporter, turning behaviour changes. Follow the manufacturer’s information on seating positions and distribute any additional luggage so that no permitted load is exceeded.

Secure the seat, feet and hands

A designated seat must be securely mounted and sufficiently large. Feet need stable supports intended for this purpose. They must not come into contact with spokes, tyres, the chain or brake disc. Covers or wheel guards must fit the bicycle and passenger configuration exactly; loose clothing must be secured before riding.

A handhold helps the passenger move with the bicycle. It must not be improvised using cables, the seat post or the rider’s clothing. If the manufacturer requires belts or a grab bar, they must be used fully. For adults, a child seat is not a suitable alternative.

Communication before setting off

The rider and passenger should agree on simple procedures: get on only after a clear signal, place feet immediately on the designated supports, do not suddenly lean to the side and wait before getting off until the bicycle is safely stationary. The rider holds both brakes, stands securely and sets off only after checking the seating position.

When stopping, the passenger remains seated calmly until a secure standstill has been reached. Getting on and off can be more difficult on an incline. Choose a level area free of traffic for this purpose, not the edge of the road between parked cars.

Test ride away from traffic

1. Check tyre pressure, brakes, wheels and all passenger components.
2. Practise getting on and off together on a level, clear surface.
3. Ride slowly in a straight line and stop in a controlled manner using both brakes.
4. Ride wide turns in both directions, without making tight turns.
5. After a few minutes, check the seat, screws and footrests again.

If the steering feels light, vague or unstable, do not begin riding on the road. Check the load and configuration or have the bicycle inspected by a specialist retailer. A pedelec should be tested in the lowest assistance mode so that unexpected power does not make the first ride more difficult.

Plan braking distance and route realistically

Additional mass increases braking distance, and the tyres must transmit more lateral force. Start braking earlier, ride more slowly through corners and avoid steep descents, cobblestones and narrow barriers for the first rides. A route that is easy alone can become considerably more demanding with two people.

Check whether bollards, chicanes, lifts or parking spaces are suitable for the vehicle’s width and length. Walk the bicycle through tight or obstructed areas if safe control would otherwise not be possible. Legal permission to carry passengers does not guarantee sufficient space on trains, buses or in buildings.

Bicycle, pedelec and S-pedelec

A compliant pedelec with pedal assistance up to 25 km/h is legally considered a bicycle. Nevertheless, the specific manufacturer approval for carrying passengers must be available, especially for a pedelec. Many standard city pedelecs are not equipped for this purpose. For Cyseekin models, passenger transport must not be assumed without consulting the relevant instructions.

An S-pedelec is a motor vehicle. Its passenger transport rules do not simply follow the bicycle regulation. The type approval, seating positions and vehicle regulations are decisive. Anyone who is not certain of the vehicle class should check the type plate and documents before carrying a passenger.

Distinction from transporting children

For children under the age of seven, Section 21 (3) contains additional rules on special seats, spoke protection and suitable child trailers. This age limit does not apply to transporting a child with a disability. These special rules cannot be transferred to an adult passenger and are explained in detail in a separate article on transporting children.

Frequently asked questions

May an adult sit on my luggage rack?

Only if the bicycle and rack were expressly built and equipped for carrying passengers. A high load capacity or seat cushion alone is not sufficient.

Does the rider have to be 16 years old?

Yes. Section 21 (3) specifies a minimum age of 16 for the rider when carrying people on bicycles.

Does the passenger need pedals?

Not on every passenger bicycle designed for this purpose. However, the passenger needs the seating and foot position specified by the manufacturer. On a tandem, separate pedals are part of the vehicle concept.

May I take someone on a standard pedelec?

Not merely because it has a motor or a luggage rack. Check the express approval, seating device, total mass and all required protective components.

As of: 6 September 2026. Section 21 StVO and the documentation for the specific bicycle are authoritative.