A ghost bike is a special kind of bike that's painted all white and left in a public place like a street corner, a park or a sidewalk. Ghost bikes are meant to remember and honor people who have died while riding a bike on the street. They're called "ghost bikes" because they're like little ghost-like reminders of the person who died while riding their bike.
People place ghost bikes in a public place as a reminder to drivers to be careful of people riding bikes on the road. It's important for drivers to be extra careful when they see a bike rider, because bikes are not as big or as fast as cars, and bike riders don't have the same protection that a car provides.
Ghost bikes can be a way to show that we care about bike riders and want to make sure they are safe on the road. By remembering those who have died while riding their bikes, we can work together to make the streets safer for everyone.