There is no robust academic evidence to indicate that the setting of any targets in the UK would contribute to progress in road casualty reduction. In fact there has been a stalling of progress in road casualty reductions across many economically advanced countries, affecting countries with targets (e.g. Sweden and the Netherlands).
The British Road Safety statement sets out the Department for Transport’s overall principles and priorities in relation to British road safety. Local authorities, the police and other bodies are free to set their own road safety targets if they wish.