Driver distraction is an important risk factor for road traffic injuries. This document focuses on the use of mobile phones while driving, in response to concern among policy-makers that this potential risk to road safety is increasing rapidly as a result of the exponential growth in the use of mobile phones more generally in society. It aims to raise awareness about the risks of distracted driving associated with mobile phone use, and to present countermeasures that are being used around the world to tackle this growing problem.