![]() ![]() The solution achieves 5 percent of the total addressable market (3.41 trillion passenger kilometers) in 2050. Scenario 1: Cities continue to become more walkable without any major interventions, and most of the temporary COVID measures to increase slow/safe/closed streets are reverted.We calculated impacts of increased adoption of the Walkable Cities solution from 2020 to 2050 by comparing two scenarios with a reference scenario in which the market share was fixed at current levels. City densities have declined, but urbanization has increased. With no single definitive metric to measure a walkable city, and due to the high variability of cities globally, we used projected growth in urban population density and mode share done by walking regionally to determine the adoption of walkability in general. By contrast, residents in cities of less than 3,000 people per square kilometer typically walk around 2 percent of all urban passenger-kilometers (Angel et al., 2011). We assume that the density threshold for walkability is 3,000–4,000 people per square kilometer (7.8–10.4 thousand per square mile), and that high-density cities could lead to residents walking for 6.5–7 percent of urban trips. Higher population density, if assumed correlated to density of points of interest (residences, workplaces, shopping, leisure, etc.), can lead to increased walking as destinations become easier for residents to get to on foot. Sources used to project growth of the market from 2014 to 2050 include the International Energy Agency (IEA), the International Council on Clean Transportation (ICCT), the Institute for Transportation and Development Policy (ITDP), and the University of California–Davis (UCD). The total addressable market for the Walkable Cities solution is defined as total urban mobility, expressed in passenger-kilometers. Health, prosperity, and sustainability go hand in hand. That is because walkable cities are easier and more attractive to live in, making for happier, healthier citizens. Today, too many urban spaces remain no- or low-walking ones, and demand for walkable places far outstrips supply. wide, well-lit, tree-lined sidewalks and walkways.density of homes, workplaces, and other spaces.Infrastructure for walkability can include: They have walk appeal, thanks to a density of fellow walkers, a mix of land and real estate uses, and key design elements that create compelling environments for people on foot. Walkable trips are not simply those with a manageable distance from point A to point B, perhaps a 10- to 15-minute journey on foot. Because there is insufficient measurement of all variables for large numbers of cities, this analysis focuses on population density as the key indicator for walkability. These seven variables are highly interrelated and are challenging to model independently. The seven dimensions of the built environment-demand, demographics, density, design, destination, distance, and diversity-are all key drivers of walkability. This solution replaces the conventional practice of driving internal combustion engine (ICE) cars in cities. Project Drawdown’s Walkable Cities solution involves increasing walking by designing and retrofitting urban environments to encourage walking for transportation. However, the notion of walking as sustainable urban mobility is increasing. Walkability is still associated only with leisure and recreation in most urban projects around the world. ![]() In 2018, humanity walked 1,573 billion kilometers, or an average of 200 kilometers (130 miles) per person per year-barely seven minutes per day. Walking is the simplest, most sustainable, and cheapest medium of locomotion. ![]()
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