People opposed to multiple transit solutions often argue that it’s not worth building bicycle lanes because nobody rides in the rain. They couldn’t be more wrong. A new study from Germany looked into the use of bikes during poor weather and found that places with good bicycling infrastructure had more cyclists during when it rains compared to cities without safe roads. Now we have scientific evidence that building bike lanes keep people on their bikes, so let’s build more of it!
Between cities and regions, not only cycling levels differ, but also the reactions of cyclists to adverse weather conditions. Using data from 122 automated bicycle counting stations in 30 German cities, and a composite index of adverse weather conditions that consists of air temperature, precipitation, wind speed, relative humidity, and cloud coverage, we calculate city-specific weather elasticities of the level of utilitarian cycling. The results show that these weather elasticities vary significantly between cities. Our next step is to analyze various determinants of weather elasticities, which reveals that the share of young inhabitants and the density of the cycle network have a positive impact on weather resilience. Based on the notion that resilience to adverse weather conditions reflects a revealed part of a city’s bicycle culture, the weather elasticities can be used to create a ranking of bicycle cities. This ranking is positively correlated with a ranking based on the modal share of cycling, as well as with other rankings based on stated preference surveys or external conditions such as infrastructure or cycling safety.