This study examines the impact of illumination on cycling habits in Ljubljana using the odds
ratio method. Data from bicycle counters and light measurements enabled a quantitative
assessment of changes in the number of cyclists under different lighting conditions. The
results indicate that higher illumination reduces the decline in nighttime cycling, with a
nonlinear relationship. At low illumination levels, the probability of cycling at night is lower,
but as illumination increases, so does the likelihood of cycling—until the effect becomes less
pronounced at higher illumination levels.
The findings are compared with existing studies that have applied similar methodological
approaches. While general trends align, differences are observed, which can be attributed to
local factors such as infrastructure, urban planning characteristics, and cycling culture. The
study highlights the need for additional measurement methods, including more precise
illumination assessments, extended temporal analyses, and a greater number of bicycle
counting locations. It also suggests complementing quantitative findings with qualitative
research on cyclists' experiences. The insights gained can contribute to improving cycling
infrastructure and urban lighting, as well as promoting sustainable mobility.
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