Apparatus and method for obtaining a value related to carbon emissions resulti ng from operation of a vehicle

摘要

A method of indicating the fuel efficiency of a vehicle during a journey that is attributable to the driving behaviour of the driver of the vehicle, rather than due to conditions over which the driver has no control is provided. The driver behaviour, evaluation threshold values may be calibrated by performing regression to calculate the fuel efficiency of the vehicle dependent on the driver behaviour and iteratively adjusting the behaviour threshold values by comparing the resulting fuel efficiency with the observed fuel efficiency.