TS ISO 11838

TS ISO 11838 is a vocabulary standard that brings together terms, symbols, definitions and general conventions for motorcycle and motorcycle-rider motions and kinematics. Standards of this kind are especially useful where movement has to be described, modelled or communicated consistently across engineering documents and technical discussions.

Why motorcycle kinematics needs shared terminology

Kinematics studies motion without focusing on the forces that cause it, using quantities such as position, velocity, acceleration, orientation and rotation. In the motorcycle context, those ideas apply not only to the vehicle itself but also to the rider’s posture, weight transfer and the coupled rider-vehicle system. In general technical use, a vocabulary standard helps keep terms consistent in analysis, design and documentation; it does not imply that this document sets out a specific test procedure or numerical requirement.

Modelling conventions and technical communication

According to the supplied scope, the standard covers symbols, definitions and conventions related to motorcycle and motorcycle-rider motions and their modelling. That makes it a reference for clear notation in calculations, drawings and reports. Because motorcycle behaviour involves tightly linked phenomena such as cornering, balance, yaw and rider input, shared terminology reduces ambiguity and supports more reliable engineering communication.

• It is a vocabulary and notation standard, not a test-method standard.
• It treats motorcycle motion and rider motion as related elements.
• It supports consistent symbols, definitions and general conventions in modelling work.
• It helps reduce misunderstanding in technical communication between disciplines.