Bicycle motion parameters / Fahrdynamik von Fahrrädern

The aim of the articles is to present the results of research aimed at determining parameters of bicycle motion currently occurring in practice, i.e. bicycle speed, duration and manner of executing the maneuvers of turning,... [ view full abstract ]

The aim of the articles is to present the results of research aimed at determining parameters of bicycle motion currently occurring in practice, i.e. bicycle speed, duration and manner of executing the maneuvers of turning, U-turning and lane change, as well as attainable deceleration and acceleration values. The studies were carried out using various types of bicycles, at various declared speeds, for various age groups of cyclists. The results have been presented in three parts. In the first part the results of research on the maneuvers of braking and running up of bicycles have been presented together with the results of measurements of cyclists’ actual speed in urban traffic conditions. The second part is devoted to the kinematics of left turning, the third part to U-turning and lane change maneuvers.

The bicycles subjected to tests were divided into three main categories: city bikes, mountain bicycles and road bicycles.The experiments were performed with the following apparatus: a) Panasonic video camera of recording... [ view full abstract ]

The bicycles subjected to tests were divided into three main categories: city bikes, mountain bicycles and road bicycles.

The experiments were performed with the following apparatus:

a) Panasonic video camera of recording speed of 30 frames per second to record bicycle motion trajectories during given maneuvres and to determine riders’ speeds in city traffic on a given road section;

b) XL-Meter accelerometer used in testing brake efficiency and accelerations attained during bicycle run-up.

Authors provided braking tests, acceleration tests, real speed tests in city traffic, left turn maneuvres, U-turn and traffic lane change. 

As a changeable parameters were used: initial speed of driver, type of bicycle, width of road or lateral displacement of bicycle, also sex and age of drivers. 

All results are presented in easy to use diagrams and tables.