A groundbreaking study by an MIT research group has unveiled the first comprehensive, routable dataset of sidewalks, crosswalks, and footpaths for all of New York City, creating the inaugural complete model of pedestrian activity in any U.S. city. This ambitious mapping project promises to revolutionize urban planning by providing unprecedented insights into how people navigate the metropolis on foot, addressing a long-standing oversight in urban development that has historically prioritized vehicular traffic over pedestrian movement.
The impetus for this extensive research can be traced back to the iconic scene in the 1969 film "Midnight Cowboy," where Dustin Hoffman’s character, Ratso Rizzo, famously yells "I’m walking here!" at an encroaching taxi in Manhattan. This cinematic moment, though fictional, powerfully encapsulates the often-contentious relationship between pedestrians and vehicles in dense urban environments. For decades, city planners and governments have meticulously tracked car traffic, investing heavily in infrastructure and analysis for automobiles. However, pedestrian traffic, despite its significant role in urban life, has largely been an undocumented phenomenon, leaving a critical gap in understanding how cities truly function and how development decisions impact the daily lives of their inhabitants.
This new MIT model aims to rectify that imbalance. It offers a detailed, data-driven view of foot traffic across the entirety of New York City, enabling planners to make informed decisions about where to invest in pedestrian infrastructure and public spaces. Furthermore, it illuminates how new developments and infrastructure proposals might affect non-motorized travel, offering a crucial tool for predicting and mitigating potential negative consequences.
"We now have a first view of foot traffic all over New York City and can check planning decisions against it," stated Andres Sevtsuk, an associate professor in MIT’s Department of Urban Studies and Planning (DUSP) and the lead researcher on the study. "New York has very high densities of foot traffic outside of its most well-known areas."
Unveiling Hidden Pedestrian Hubs Beyond Manhattan
A significant revelation from the study is the extensive pedestrian activity found in New York City’s outer boroughs, challenging the common perception that high foot traffic is confined to Manhattan. While Midtown Manhattan indeed boasts the highest foot traffic per block, the research highlights that other boroughs possess numerous stretches of sidewalk with substantial pedestrian volumes that could benefit from greater investment in pedestrian infrastructure.
"Midtown Manhattan has by far the most foot traffic, but we found there is a probably unintentional Manhattan bias when it comes to policies that support pedestrian infrastructure," Sevtsuk explained. "There are a whole lot of streets in New York with very high pedestrian volumes outside of Manhattan, whether in Queens or the Bronx or Brooklyn, and we’re able to show, based on data, that a lot of these streets have foot-traffic levels similar to many parts of Manhattan."
This finding suggests that current planning strategies may inadvertently overlook areas outside the most densely populated parts of Manhattan, leading to a disparity in resource allocation for pedestrian improvements. The model provides concrete data to advocate for equitable distribution of resources across all five boroughs.
Enhancing Pedestrian Safety Through Per-Pedestrian Risk Analysis
Beyond mapping foot traffic, the MIT model introduces a critical advancement in pedestrian safety analysis: the ability to quantify vehicle crashes involving pedestrians not just by raw totals, but on a per-pedestrian basis. This innovative approach provides a more nuanced understanding of risk, identifying areas where pedestrians face the greatest danger relative to the volume of foot traffic.
"A lot of cities put real investments behind keeping pedestrians safe from vehicles by prioritizing dangerous locations," Sevtsuk noted. "But that’s not only where the most crashes occur. Here we are able to calculate accidents per pedestrian, the risk people face, and that broadens the picture in terms of where the most dangerous intersections for pedestrians really are."
Traditionally, safety efforts have focused on locations with the highest absolute number of crashes. However, the MIT model reveals that areas with extremely high pedestrian volumes, such as Times Square or Herald Square in Manhattan, may have many crashes but are statistically safer for individuals when considering the sheer number of people walking there. Conversely, other areas, potentially with less overall traffic but a higher proportion of crashes relative to pedestrian numbers, might be overlooked in traditional safety assessments. This per-pedestrian risk metric allows for more targeted and effective interventions.
Methodology and Data: Building the Foundation for Understanding
The study, published in the prestigious journal Nature Cities under the title "Spatial Distribution of Foot-traffic in New York City and Applications for Urban Planning," represents a culmination of years of research by Sevtsuk and his colleagues. Their work has previously involved charting and modeling pedestrian traffic in diverse locations, from Melbourne to MIT’s own Kendall Square neighborhood.
While many cities collect some pedestrian count data, it is often fragmented and insufficient for comprehensive analysis. Urban development proposals typically require vehicle traffic impact assessments, but rarely consider the effects on pedestrians. New York City, however, does dedicate a portion of its Department of Transportation (DOT) to pedestrian issues, and a remarkable 41% of all trips within the city are made on foot, compared to just 28% by vehicle. This high ratio of walking trips, likely the highest among major U.S. cities, made New York an ideal testbed for this pioneering research.
To calibrate their model, the MIT team utilized pedestrian counts meticulously recorded by the New York City DOT in 2018 and 2019. These counts covered approximately 1,000 city sidewalk segments on weekdays and roughly 450 segments on weekends. The researchers developed a sophisticated model that incorporates a wide range of factors to estimate foot traffic across the entire city, not just at the specific points where counts were taken.
Key Findings and Insights from the Model
The calibrated model revealed striking patterns in pedestrian movement:
- Peak Foot Traffic: Midtown Manhattan emerged as the area with the highest average foot traffic, registering approximately 1,697 pedestrians per sidewalk segment per hour during the evening peak. The financial district in lower Manhattan followed with 740 pedestrians per hour, and Greenwich Village ranked third with 656 pedestrians per hour.
- Beyond Manhattan: Contrary to assumptions, other parts of the city exhibited significant pedestrian volumes. Morningside Heights and East Harlem in Manhattan recorded around 226 and 227 pedestrians per block per hour, respectively. These figures are comparable to, or even lower than, those in other boroughs. For instance, Brooklyn Heights saw 277 pedestrians per hour, University Heights in the Bronx had 263, Borough Park and the Grand Concourse in the Bronx averaged 236, and Corona in Queens averaged 222. Numerous other locations across the outer boroughs also registered foot traffic exceeding 200 pedestrians per hour.
- Trip Purpose Variability: The model’s analysis of pedestrian journeys across different times of day indicated distinct patterns. In the mornings, people primarily headed to work and schools, with transit stops serving as major attractors of foot traffic. During midday and evenings, trip purposes became more varied, encompassing visits to amenities, social gatherings, and recreational activities. "Because of jobs, transit stops are the biggest generators of foot traffic in the morning peak," noted Liu Liu, a PhD student at the City Form Lab in DUSP and a co-author of the study. "In the evening peak, of course people need to get home too, but patterns are much more varied, and people are not just returning from work or school. More social and recreational travel happens after work, whether it’s getting together with friends or running errands for family or family care trips, and that’s what the model detects too."
- Safety Hotspots: The research identified areas with disproportionately high pedestrian crash risks on a per-pedestrian basis. While popular areas like Times Square and Herald Square experience many crashes, their extremely high pedestrian volumes make them relatively safer for individuals. In contrast, certain locations, such as those around highway off-ramps and areas with extensive car infrastructure, including parts of Staten Island, showed a higher incidence of crashes relative to the number of pedestrians present, indicating a greater inherent risk for walkers. "Places like Times Square and Herald Square in Manhattan may have numerous crashes, but they have very high pedestrian volumes, and it’s actually relatively safe to walk there," said Rounaq Basu, an assistant professor at Georgia Tech and co-author. "There are other parts of the city, around highway off-ramps and heavy car-infrastructure, including the relatively low-density borough of Staten Island, which turn out to have a disproportionate number of crashes per pedestrian."
Implications for Urban Planning and Policy
The implications of this research extend far beyond academic interest. The MIT model provides city officials with a powerful tool to:
- Prioritize Infrastructure Investments: By identifying areas with high pedestrian volumes and high per-pedestrian risk, planners can strategically allocate resources for sidewalk improvements, crosswalk enhancements, and traffic calming measures.
- Evaluate Development Impacts: Developers and city planners can use the model to assess how new construction projects or changes in land use might affect pedestrian flow and safety, enabling proactive mitigation strategies.
- Promote Equitable Development: The identification of significant pedestrian activity in outer boroughs can help ensure that these areas receive adequate attention and investment in pedestrian infrastructure, fostering more inclusive urban development.
- Enhance Public Safety: The per-pedestrian risk analysis offers a more precise method for identifying and addressing dangerous intersections and street segments, leading to more effective safety interventions.
The research team, which also includes Liu Liu and Abdulaziz Alhassan, PhD students at MIT, and Justin Kollar, a PhD student at MIT’s Leventhal Center for Advanced Urbanism, is optimistic about the practical application of their findings. New York City officials have already been engaged with the MIT team, indicating a strong likelihood that the model will be integrated into future urban planning initiatives.
A Scalable Solution for Cities Across the U.S.
The significance of the MIT model lies not only in its application to New York City but also in its potential to be replicated in urban areas nationwide. "As distinct as New York City might be, the MIT model can be applied to cities and town anywhere in the U.S.," Sevtsuk emphasized.
The team is already collaborating with municipal officials in other major cities. In Los Angeles, the model is being used to help plan for both daily urban mobility and the influx of visitors expected for the 2028 Summer Olympics. Simultaneously, the state of Maine is working with the MIT team to assess pedestrian movement across over 140 cities and towns, aiming to identify areas for necessary upgrades and safety improvements statewide.
Sevtsuk hopes that this New York City study will serve as a catalyst for other cities to embrace pedestrian traffic modeling and mapping. He views it as a crucial step towards decarbonizing cities and rectifying what he describes as the "disproportionate focus on car travel prevalent in 20th century urban planning."
"I hope this can inspire other cities to invest in modeling foot traffic and mapping pedestrian infrastructure as well," Sevtsuk concluded. "Very few cities make plans for pedestrian mobility or examine rigorously how future developments will impact foot-traffic. But they can. Our models serve as a test bed for making future changes."
The development of this comprehensive pedestrian model marks a pivotal moment in urban planning, shifting the focus from solely accommodating cars to understanding and prioritizing the movement of people on foot, ultimately paving the way for safer, more equitable, and sustainable cities.
