Bike lanes are designated paths on the road specifically for cyclists. They help keep bikers safe by separating them from motor vehicles, making it easier for everyone to share the road. These lanes can be painted lines on the street or physically separated from traffic, providing a safer environment for riders of all ages. Having bike lanes encourages more people to ride bicycles, which can reduce traffic congestion and pollution. Cities like Amsterdam and Copenhagen are known for their extensive bike lane networks, promoting a healthier lifestyle and a more eco-friendly way to travel.