This indicator provides information regarding how efficiently people are being transported and is a common metric for measuring the efficiency for mobility systems. Some research also indicates that the efficiency of shared mobility services at optimising the movement of users while minimising that of vehicles is greater than previous point-to-point, on-demand mobility services (i.e. taxis). The capacity utilisation rate of UberX vehicles, for example, has been found to be an average of 38% greater than traditional point-to-point services in two large North American cities (Cramer and Kreuger, 2016). Preliminary indications also suggest that capacity utilisation in shared mobility networks is markedly higher in dense urban areas, indicating that higher density (of supply and demand) is correlated with higher efficiency.