In recent years, IFSTTAR has developed some tools and methods for the monitoring and the diagnosis of transport infrastructures using probe vehicles with embedded measurement systems. This scientific and technological approach has been treated into two projects which have different primary goals. The first project, whose French acronym is MIRANDA (Measurement of Road Indicators by Nomadic devices), has provided a demonstrator aimed at road managers in order to give them an automatical update map of road surface defects and thus improving the management of the network. For this purpose, the road data collection has been performed by smartphones, since they have the advantage of being both a measurement system (via internal sensors like accelerometer and GPS) and a connected object (e.g. with a road server unit). The second project deals with the problematic of near miss accidents. Event Data Recorder (EDR) are usually used to collect safety-relevant events related to driver's behaviour and to provide feedback in order to positively impact their behaviour. EDR's potentialities allow a much wider field of finalities. This presentation aims at contributing to EDR's efficiency evaluation regarding to road safety. Results obtained through the French research project SVRAI will be presented to assess how EDR can help local authorities to detect road infrastructures defects related to safety issues. In a near future, the implementation on smartphone is foreseen. Both projects aim to give innovative, compact and economical tools to road managers in order to improve the monitoring and the safety of their network. Because both systems share the typical architecture of ITS applications, it is envisaged to fuse them and to test the resulting application in the framework of the SCOOP project, which has been recently selected by INEA to prepare the deployment of these cooperative ITS systems on the French territory and which contribute to IFSTTAR flagship program R5G. SVRAI and MIRANDA projects.