Extreme heat is significantly reshaping travel plans and daily routines worldwide, according to a new study by researchers from Arizona State University, the University of Washington, and the University of Texas at Austin. The research, titled “Understanding How Extreme Heat Impacts Human Activity-Mobility and Time Use Patterns,” highlights how rising temperatures are altering transportation preferences and human behavior in urban areas.
The study reveals a marked shift in transportation choices during heat waves. As temperatures soar, car usage increases while walking, biking, and public transit trips decline dramatically. On extremely hot days, public transit usage drops by nearly 50%, as individuals opt for air-conditioned vehicles to escape the heat. This trend poses challenges for cities aiming to promote sustainable transportation options.
Moreover, extreme heat leads people to stay indoors more frequently, significantly reducing outdoor activities and non-essential travel. The study indicates that individuals are more likely to schedule their outings during cooler parts of the day, such as early morning or late evening.
Vulnerable populations, particularly those without access to cars or adequate cooling systems, face heightened risks during these extreme weather events. The researchers emphasize the need for targeted policy interventions to mitigate the impacts of heat on communities. Recommendations include creating shaded public spaces, offering vouchers for on-demand transportation for at-risk groups, and declaring “heat days” similar to snow days, encouraging people to remain indoors when temperatures become dangerously high.
As cities grapple with the increasing frequency of extreme weather events, understanding how heat affects mobility is crucial for developing effective policy solutions. The findings underscore the urgency of addressing climate challenges and ensuring that urban environments are resilient enough to protect residents from the adverse effects of rising temperatures.
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