Development of a multi-lane cargo bike with a view to driving behaviour

Abstract

Cargo bikes are a suitable alternative to cars for transporting food or loads for private individuals or delivery services,
especially in city centers. Major advantages are that the use of cargo bikes is emission-free and causes no noise. In comparison,
the intensive use of private cars in inner-city traffic is very harmful to the traffic system and the environment. In order to solve
this problems, this project deals with the product development of a multi-lane cargo bike, which is designed for the transport of
loads over short and medium distances. The funded SteigtUM project therefore developed an urban mobility concept based on
micromobiles. One part of these micromobiles are the cargo bikes mentioned above, which are used with an app-based hire system.
The aim for the newly developed cargo bike with two wheels in the front is to achieve a driving behavior that is comparable to the
driving behavior of conventional single-lane bicycle. The reasons for the multi-lane design are an autonomous parking function,
which is one of the overall objectives of the project and a safe standing even with loads. In order to gain a comparable driving
behavior like single-lane bicycles, the strong dependence of the geometric design on the steering head angle and the caster must
be given special consideration. In addition, the torsional stiffness and the track adjustment of the multi-lane axle are of great
importance. The developments in the overall project take particular account of suitability for everyday use. Furthermore, they are
based on various user studies on driving behavior and thus ensure a high level of acceptance and usability. Cargo bikes therefore
offer a great opportunity to further strengthen sustainable inner-city mobility and reduce the use of cars as a means of transport.