Transport currently accounts for half of global oil consumption and nearly 20% of world energy use, of which approximately 40% is used in urban transport alone. The IEA expects urban transport energy consumption to double by
2050, despite ongoing vehicle technology and fuel-economy improvements. While increased mobility brings many benefits, the staggering rate of this increase creates new challenges. Urgent energy-efficiency policy attention will be
needed to mitigate associated negative noise, air pollution, congestion, climate and economic impacts, all of which can cost countries billions of dollars per year. This report highlights lessons learned and examples of good practice from countries with experience implementing a wide range of measures to improve energy efficiency in urban transport systems.