 In some cases, users of small vehicles may use the queue jump lanes to bypass the regularly queued traffic, at which point the vehicle can then maneuver back into the regular lanes at the front of the queue.Such a scheme is commonly found in London, England.Increasing utilisation of smaller vehicles can reduce the required headway for vehicles, subsequently increasing the densities and therefore capacities supportable by the roadway, and ultimately increasing the overall efficiency for all users of the system.