Beyond Low-Stress Bicycle Lanes: Assessing the Role of Bicycle Network Density in Ridership

Abstract

While the installation of lower-stress bicycle facilities has been linked with greater increases in bicycle commuting, the extent to which facilities’ effectiveness is influenced by broader bicycle network characteristics remains unclear. To what degree does bicycle network density amplify the effect of bicycle facilities on bicycle commuting? Using multiple linear regression models and elasticity analyses, this study examined the interplay between bicycle facility installation and bicycle network density and their influence on bicycle commuting in 14,011 block groups across 28 U.S. cities. Findings suggest that bicycle network density exhibited stronger associations with ridership growth than the installation of individual facilities, with network effects exceeding facility installation effects by a factor of 4.6. More specifically, the installation of protected and buffered bicycle lanes was consistently and significantly associated with increased bicycle commuting, but the installation of standard bicycle lanes lost significance after the presence of a wider bicycle network was accounted for (the installation of shared-lane markings and off-road trails demonstrated non-significant relationships with bicycle commuter changes). Protected bicycle lane installations also produced meaningful ridership gains even in lower-density bicycle network contexts (elasticity of 0.48) with diminishing returns as bicycle network density increased (elasticity of 0.24). In contrast, higher-stress facilities demonstrated higher elasticities when moving from medium to high network density (elasticity of 0.57), indicating that their effectiveness is more dependent on a well-connected bicycle network. Taken together, these findings highlight the importance of prioritizing not only high-quality, low-stress bicycle facilities but also the development of continuous and connected low-stress networks.