Ghost bikes are a memorial for cyclist who were injured or killed on a street. They are located in more than 150 locations all over the world. You have probably seen the white bikes chained to a post near an accident site. See ghostbikes.org.
My ghost bikes are not white, they are pink. A 1970's rusty, pink Columbia bike parked in the bike room at work, a shiny pink cruiser on the street, little blond girl on a little pink bike with training wheels. They are a somber reminder of our beloved daughter who passed 2 years ago. She loved her pink bikes. Each time I see a pink bike, it is a reminder of a lost little girl. I just say hey and send a kiss.