ISO 4138:2021

Passenger cars — Steady-state circular driving behaviour — Open-loop test methods

This document specifies open-loop test methods for determining the steady-state circular driving behaviour of passenger cars as defined in ISO?3833 and of light trucks, such behaviour being one of the factors comprising vehicle dynamics and road-holding properties. The open-loop manoeuvres included in these methods are not representative of real driving conditions, but are nevertheless useful for obtaining measures of vehicle steady-state behaviour resulting from several specific types of control inputs under closely controlled test conditions.

This document specifies open-loop test methods for determining the steady-state circular driving behaviour of passenger cars as defined in ISO?3833 and of light trucks, such behaviour being one of the factors comprising vehicle dynamics and road-holding properties. The open-loop manoeuvres included in these methods are not representative of real driving conditions, but are nevertheless useful for obtaining measures of vehicle steady-state behaviour resulting from several specific types of control inputs under closely controlled test conditions.

Edition	2021
Published Date	2021
Published By	International Standardization Organisation
Page Count	21