596 ITU‐T's Technical Reports and Specifications 2.2.4 Fleet management Wireless tracking devices fitted to vehicles can strengthen the efficiency of fleet logistic operations, while reducing energy consumption and GHG emissions. These tracking devices can feed data to centralized fleet management software or to other vehicles in the fleet. In addition to location, they can also be used to remotely monitor loading capacities, enabling vehicle loading optimization. For example, the vehicle’s route can then be adjusted to make use of spare capacity. Further benefits can arise in SSC where wireless devices can be used in applications such as traffic volume monitoring, connected road signs and traffic light synchronization. Such wireless devices are part of the intelligent traffic control (ITC) system. The impact of GHG savings of smart transportation and logistics, and smart grids and smart meters, have been estimated for different regions around the world, as illustrated in Figure 5. Source: GSMA, Mobile’s Green Manifesto (2012). Figure 5 – Estimated GHG savings in smart transportation and logistics, and smart grids and smart meters, MtCO2e, 2011