Improving and developing technology in the world covered the industrial, manufacturing and service industry and therefore is not itself a branch of traffic not left out from the clothes process. So that the traffic had to adapt to the market situation so that I survived that as far as possible meet the demands of its users. The best indicator of this is Fleet Management or tracking vehicles in operation. Using this system, companies that own fleet or fleet vehicles can with considerable advantages in organization, management and the maintenance of vehicles to improve their business in terms of efficiency and economy. In the Croatian territory have emerged numerous companies that have realized the lack of supply of this type of service, and the same number increased significantly. So now users of these services have anumber of options from tracking their vehicles in real time via GPS, control the fuel consumption of individual vehicles, temperature monitoring cold storage Like many other options that can be customized to the user. From all this we can conclude that it is precisely the flexibility of the main advantage of this system which makes it extremely cost-effective and useful.