Street design and driving behavior: evidence from a large-scale study in Milan, Amsterdam, and Dubai

• URL: http://arxiv.org/abs/2507.04434v1
• Date: Sun, 06 Jul 2025 15:40:38 GMT
• Title: Street design and driving behavior: evidence from a large-scale study in Milan, Amsterdam, and Dubai
• Authors: Giacomo Orsi, Titus Venverloo, Andrea La Grotteria, Umberto Fugiglando, Fábio Duarte, Paolo Santi, Carlo Ratti,
• Abstract summary: This study investigates drivers' compliance with the 30 km/h speed limit in Milan.<n>We apply computer vision-based semantic segmentation models to Google Street View images.<n>A large-scale analysis reveals that narrower streets and densely built environments are associated with lower speeds.<n>We develop a machine learning model to predict driving speeds based on street characteristics.
• Score: 7.63450614935066
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: In recent years, cities have increasingly reduced speed limits from 50 km/h to 30 km/h to enhance road safety, reduce noise pollution, and promote sustainable modes of transportation. However, achieving compliance with these new limits remains a key challenge for urban planners. This study investigates drivers' compliance with the 30 km/h speed limit in Milan and examines how street characteristics influence driving behavior. Our findings suggest that the mere introduction of lower speed limits is not sufficient to reduce driving speeds effectively, highlighting the need to understand how street design can improve speed limit adherence. To comprehend this relationship, we apply computer vision-based semantic segmentation models to Google Street View images. A large-scale analysis reveals that narrower streets and densely built environments are associated with lower speeds, whereas roads with greater visibility and larger sky views encourage faster driving. To evaluate the influence of the local context on speeding behaviour, we apply the developed methodological framework to two additional cities: Amsterdam, which, similar to Milan, is a historic European city not originally developed for cars, and Dubai, which instead has developed in recent decades with a more car-centric design. The results of the analyses largely confirm the findings obtained in Milan, which demonstrates the broad applicability of the road design guidelines for driver speed compliance identified in this paper. Finally, we develop a machine learning model to predict driving speeds based on street characteristics. We showcase the model's predictive power by estimating the compliance with speed limits in Milan if the city were to adopt a 30 km/h speed limit city-wide. The tool provides actionable insights for urban planners, supporting the design of interventions to improve speed limit compliance.

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