Ghost bike in Bow on 17th November 2023 in East LondonLondon, United Kingdom. A ghost bike or ghostcycle is a bicycle set up as a roadside memorial in a place where a cyclist has been killed or severely injured. Apart from being a memorial, it is usually intended as a reminder to passing motorists to share the road. Ghost bikes are usually junk bicycles painted white, sometimes with a placard attached, and locked to a suitable object close to the scene of the accident. Many of these memorials are political statement.