DRIVE-C2X is an Integrated Project co-funded by the European commission to deploy a set of cooperative ITS functions at seven test sites in Europe in order to run Field Operational Tests. DRIVE-C2X supports the development of standard compliant (EU mandate M/458) cooperative systems implementations as well as their integration into vehicles (cars and motorbike) and road side infrastructure. A FESTA based test methodology support the assessment of cooperative driving based on Field Operational Test data as well as user feedbacks.