The age of the vehicle fleet is an indicator of the driving forces that characterize the technical condition of the fleet, taking into account the age of vehicles. Transport is a significant source of emissions of pollutants and GHGs, and other adverse effects on human health and the environment. These impacts increase with the age of the vehicle fleet. It is expected that the priority of the state transport development policy in the EECCA countries will be to improve the composition of the fleet of transport vehicles by replacing old, less environmentally friendly vehicles with new, more environmentally friendly ones.