Bike only lanes are often next to car lanes, at crossings there are separate lights for the bike lanes so they either don’t cross at the same time as cars, or they cross together with cars in a direction where the car and bike traffic don’t cross each other.
Bike only lanes are often next to car lanes, at crossings there are separate lights for the bike lanes so they either don’t cross at the same time as cars, or they cross together with cars in a direction where the car and bike traffic don’t cross each other.