Moving into the 21st century's second decade, policy makers and urban planners are well aware of the importance of diverse transportation networks for communities small and large. As climate change, energy, public health, and quality-of-life concerns—all of which link with transportation to some degree—continue to grab our collective attention, cities throughout the world are working to broaden their transport systems to better serve a wider user range. These efforts often include improving nonmotorized transportation options, notably though expansion of walking and bicycling networks. This is obviously not new to some regions (such as Western Europe, where comprehensive pedestrian and bicycle systems have existed for decades); however, the trend is gaining traction around the world. Even in the oil-rich Middle East, communities are becoming increasingly aware of the need for enhanced nonmotorized transport systems to address growing—often chronic—traffic congestion, air pollution, user safety, public health, and other concerns.