Protected bike lanes are designated paths for cyclists that are physically separated from motor vehicle traffic. These lanes often use barriers, such as curbs or planters, to create a safe space for riders. This separation helps reduce the risk of accidents and encourages more people to cycle. These lanes can be found in urban areas where cycling is promoted as a sustainable mode of transportation. Cities like New York and Copenhagen have implemented protected bike lanes to improve safety and accessibility for cyclists, contributing to a healthier and more environmentally friendly community.