Abstract: This research paper presents an overview of policies and methods of controlling the emissions caused by motor vehicles and road traffic to reduce local and global pollution. The main premise is the fact that individual mobility and modern freight transport system should include the ideea of people’s well-being, quality of life, freedom, all these being parts of the social and cultural context. In this case, the mobility of tomorrow will be more environment-friendly, resource lean, quieter, safer, geared to individual mobility needs and seamless logistics. Highly efficient, innovative powertrain technologies and alternative fuels will have a key-role in this respect.
Therefore, effective policies must meet multiple objectives such as:

• Establishing a balance among different solutions of power trains: ICEs, Hybrid, and Electric Vehicle. Petroleum-based fuels will continue to be the foundation of mobility in the coming years. The main reasons lie in the extremely high energy density of diesel and petrol, whereby large distances can be covered using a relatively small volume of fuel, and in efficient combustion engine technology. The introduction of electric vehicles on the market will encompass: hybrids (micro, mild, full and plugin hybrid electric vehicle – PHEV), range extender electric vehicle (REEV), battery electric vehicle (BEV) and fuel cell vehicles (FCV).In the future, other powertrain technologies as hydrogen-powered vehicles will be able to contribute to climate protection.

• Providing security of fuel’s supply by using alternative fuels. Such alternative fuels can be methyl or ethyl esters (biodiesels), biogases (digester gas, wood gas, gas from biomass gasification, ...), alcohols from biomass (methanol, ethanol, ...), vegetable oils, animal fats, etc. , or even hydrogen.

• Defining a conclusive mobility concept. This concept is materialized through a sustainable, consistent transport policy for economic growth and efficient environmental protection;?investment in good transport routes based on needs and promotion of intelligent traffic systems (real-time traffic information, dynamic parking space management, fleet management systems and powertrains assistance systems, ICT in logistics).

• Reducing chemical and noise pollution caused by motor vehicles by controlling emissions. At present, all studies shows that is no doubt that the internal combustion engine (ICE) will be the main propulsion technology for road transport for a long time, there is no doubt that we have to find alternative fuels, to replace the derivatives from crude oil, such as gasoline and diesel. Simultanously, the alternative fuels should decrease the noxious emissions (NOx, particles) and decrease the net greenhouse gas emissions (CO2). Biofuels constitute a central pillar of sustainable mobility and they have the advantage of not requiring essentially new engines or a new infrastructure, since they can be added to fossil fuels in a controlled form (biodiesel can only be added to a maximum 7% of the fossil fuel).

Brief Biography of the Speaker:
Corneliu Cofaru is a full Professor at the Automotive and Engine Department within the Mechanical Engineering Faculty from Transilvania University of Brasov, Romania. His area of expertise is the environmental aspects of internal combustion engines. He authored or co-authored over 200 scientific papers published in reviewed journals or presented at international conferences organized by FISITA, EAEC, SIAR, etc. He wrote as author and co-author 23 books. Two of these are written in English and are entitled: "Materials-Energy Sustainable Development" published in 2002 and „Transport and Environmental Engineering" published at the Transilvania University Publishing House in 2007. He had the opportunity to manage international projects in Tempus and Leonardo da Vinci frame and he is a member of Romanian society of automotive engineers. He is Deputy Dean of the Mechanical Engineering Faculty.