"One-chance" is the name Nigerians use for a form of robbery that takes place in both public and private vehicles when people accept the offer of a ride. It is an organized crime, perpetrated by people who work together, using a strategy of hailing passengers into their waiting vehicle. They capitalize on the transport needs of passengers, especially during rush hours in the morning and the evenings. In Lagos, an estimated 8 million commuters and 5 million vehicles use the roads and bridges connecting the mainland and island.