The Context

Xi’an, once the starting point of China’s fabled Silk Road, is the largest trading center in western China and a vital inland air, highway and railway hub. Like many of China’s growing cities, Xi’an is undergoing large-scale growth both in population and number of motorized vehicles.

Working hand in hand with the local authorities in Xi’an, EMBARQ identified and measured a set of sustainable transport indicators—namely, accurate emissions and traffic data—relevant to Xi’an’s urban growth strategy so that the city could have an informed plan for accommodating growth.