But research carried out by ambulance services across Europe found it is vital that emergency vehicles be instantly recognisable anywhere.
They discovered that the human eye's response to any particular hue reaches a peak with the colour 'Euro Yellow RAL 1016.'
The research was carried out on behalf of the European Committee for Standardisation, which promotes voluntary technical harmonisation of products and services in Europe.
It is hoped the new colour will help stop misunderstandings in countries such as France - where other Europeans often mistake the red ambulances for fire engines.
The first of the new yellow ambulances is now in use at the Wexham ambulance station in Slough, Berkshire.
英國咁講
http://www.dailymail.co.uk/news/article-103506/Euro-yellow-new-colour-ambulances.html